Windows Defender can Significantly Impact Intel CPU Performance


  • Staff
Kevin Glynn, aka "Uncle Webb," our associate software author behind popular utilities such as ThrottleStop and RealTemp, developed a new utility named Counter Control, which lets you monitor and log the performance counters of Intel Core processors since 2008 (Core "Nehalem"). During development for ThrottleStop, Kevin discovered a fascinating bug with Windows Defender, the built-in security software of Windows, which causes significantly higher performance impact on the processor than it should normally have. Of course a security software is bound to have some (small) performance impact during real-time protection, but this is much bigger.



The first sign that something is happening is that HWiNFO will be reporting a reduced "Effective Clock" speed when the CPU is fully loaded. A much bigger problem is that when Defender is affected by the bug, performance of your machine will be significantly reduced. For example, a Core i9-10850K running at 5.00 GHz all-core loses 1000 Cinebench points (or 6%). Such a performance loss has been reported by owners of Intel Core 8th, 9th, 10th and 11th Gen, both desktop and mobile CPUs, on both Windows 10 and Windows 11. AMD processors are not affected.


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Winuser

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You *think* you don't have any performance loss because you don't know how your PC performs without Windows Defender or have never benchmarked it. If you have, then you must be really special that all the reports have confirmed this but in some mysterious way, your computer is so special that it doesn't suffer from this performance loss. :ROFLMAO:
I'm not sure how I should take this post. I did say noticeable performance hits and not, no performance hits. We don't do any photo or video editing on these devices and we're not gamers. Everything we do on our devices runs without any hiccups. Also, if the only way to see any performance loss is to run benchmark programs, then does it matter?
 

My Computers

System One System Two

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    PowerSpec B746
    CPU
    Intel Core i7-10700K
    Motherboard
    ASRock Z490 Phantom Gaming 4/ax
    Memory
    16GB (8GB PC4-19200 DDR4 SDRAM x2)
    Graphics Card(s)
    NVIDIA GeForce GTX 1050 TI
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    Realtek Audio
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    Samsung SAM0A87 Samsung SAM0D32
    Screen Resolution
    1920 x 1080
    Hard Drives
    NVMe WDC WDS100T2B0C-00PXH0 1TB
    Samsung SSD 860 EVO 1TB
    PSU
    750 Watts (62.5A)
    Case
    PowerSpec/Lian Li ATX 205
    Keyboard
    Logitech K270
    Mouse
    Logitech M185
    Browser
    Microsoft Edge and Firefox
    Antivirus
    ESET Internet Security
  • Operating System
    Windows 11 Dev
    Computer type
    Laptop
    Manufacturer/Model
    HP Envy x360 15-ds1083cl
    CPU
    AMD Ryzen 7 4700U 2.0GHZ
    Memory
    16 MB DDR 4-2666
    Graphics card(s)
    AMD Radeon
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    15.6"
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    1920x1080
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    PCIe NVMe M.2 512GB
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    Firefox, Edge and Edge Canary
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    ESET Internet Security

Winuser

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but a laptop where the fan starts whirring faster and more noisily and the case getting much warmer than usual (not a modest amount but significantly noticeable)
I had that same problem with my laptop after it over heated when I left it in Modern Standby with the lid closed. It's an AMD CPU so not an Intel problem. After doing a few searches on my laptop model running hot, I found a Reg Hack that added a new option in the power setting. Temps are now back to normal.
 

My Computers

System One System Two

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    PowerSpec B746
    CPU
    Intel Core i7-10700K
    Motherboard
    ASRock Z490 Phantom Gaming 4/ax
    Memory
    16GB (8GB PC4-19200 DDR4 SDRAM x2)
    Graphics Card(s)
    NVIDIA GeForce GTX 1050 TI
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    Samsung SAM0A87 Samsung SAM0D32
    Screen Resolution
    1920 x 1080
    Hard Drives
    NVMe WDC WDS100T2B0C-00PXH0 1TB
    Samsung SSD 860 EVO 1TB
    PSU
    750 Watts (62.5A)
    Case
    PowerSpec/Lian Li ATX 205
    Keyboard
    Logitech K270
    Mouse
    Logitech M185
    Browser
    Microsoft Edge and Firefox
    Antivirus
    ESET Internet Security
  • Operating System
    Windows 11 Dev
    Computer type
    Laptop
    Manufacturer/Model
    HP Envy x360 15-ds1083cl
    CPU
    AMD Ryzen 7 4700U 2.0GHZ
    Memory
    16 MB DDR 4-2666
    Graphics card(s)
    AMD Radeon
    Monitor(s) Displays
    15.6"
    Screen Resolution
    1920x1080
    Hard Drives
    PCIe NVMe M.2 512GB
    Browser
    Firefox, Edge and Edge Canary
    Antivirus
    ESET Internet Security

User1234

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You *think* you don't have any performance loss because you don't know how your PC performs without Windows Defender or have never benchmarked it. If you have, then you must be really special that all the reports have confirmed this but in some mysterious way, your computer is so special that it doesn't suffer from this performance loss. :ROFLMAO:
Hahaha i must be a super special boy too then cause i don't have the issue, Benched with and without defender running. Same result, Im literally using 3% of my cpu and i have a browser and a few game launchers open as well as some winrar and transfers going. Trust me i'd notice, I haven't AND i even seeked it out. Tada not there :)
I love that you consider us special though so thanks for that :D
 

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unclewebb

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Windows 10
I simply dont have the issue
Most computers with Intel 10th Gen CPUs have this issue.

Did you try running Counter Control after you first booted up? What did it report? Did you try running Cinebench R23? What speed did you run it at and what was your score? Those tests can confirm if your computer has this issue.

Some computers have other programs running that can prevent Windows Defender from doing its thing.

For many users the performance loss is not big enough to be concerned about. Unless you do some testing, you cannot be sure if you have this issue or not. To test for this, I would boot up, run Counter Control immediately and then leave it running in the background. It will log any changes in the fixed function counters. Review the log in a few hours and see if there are any changes.

There are times on my computer when I start Windows and this part of the Windows Defender algorithm is not running at all. There are other times where it is running at boot up but stops after 5 minutes or so. Sometime later, it starts running quietly in the background again and this can go on indefinitely or for hours after that.
 

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System One

  • OS
    Windows 10

bikemanI7

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Simply don't notice any issues on my Intel 10th Gen I7 10700 CPU, System uptime is 5 days since last reboot, and absolutely running all my gaming fine with Defender, and such, probably due for a reboot soon though, and maybe then will check it out further at that point.

Overall though system performance really solid still
 

My Computer

System One

  • OS
    Windows 11 Pro x64
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom
    CPU
    Intel I7 10700
    Motherboard
    Gigabyte B460M_DS3H Rev 1.0
    Memory
    16GB DDR4 2400mhz
    Graphics Card(s)
    EVGA Geforce 1660 Super
    Sound Card
    Onboard Audio
    Monitor(s) Displays
    Asus VG245H
    Screen Resolution
    1920x1080
    Hard Drives
    M.2 Samsung 970 Evo Plus 500GB Boot
    Samsung 860 Evo 1TB-Game SSD
    Western Digital Black 4TB Storage Drive

    External
    Western Digital Elements 500GB
    Western Digital My Passport 2TB
    Toshiba 2TB in External Enclosure
    Seagate 8TB in External Enclosure
    PSU
    EVGA G3 650 Watt
    Case
    Thermaltake V200 TG RGB
    Cooling
    Intel Stock CPU Cooler, 3 Front Intake Fans, 1 120 Exhaust in rear of case
    Keyboard
    Logitech G213
    Mouse
    Logitech G502 Hero
    Internet Speed
    Extreme 600Mbps/20Mbps upload
    Browser
    MS Edge Chromium
    Antivirus
    Windows Defender, Malwarebytes Free
    Other Info
    UEFI, Secure Boot, TPM 2.0, Macrium 8 Home Edition

Spartan

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I'm not sure how I should take this post. I did say noticeable performance hits and not, no performance hits. We don't do any photo or video editing on these devices and we're not gamers. Everything we do on our devices runs without any hiccups. Also, if the only way to see any performance loss is to run benchmark programs, then does it matter?
Forget benchmarks, I have a folder on my D: partition called Software. That is where I place all the setup files of the programs I use. In that folder also, there are many sub-folders that contain portable apps (ie. Firefox portable). I have assigned a custom icon for every folder in there to make it easy to distinguish. When I am using Windows Defender, simply opening the Software folder results in the icons appearing one by one slowly despite me having a super fast laptop and SSD. This is because Windows Defender will keep on scanning every file/folder over and over again let alone the fact that it causes a bigger performance hit when it scans. Other Antivirus programs are either much lighter when scanning or better yet, like ESET NOD32 for example, it has a whitelist feature so any file that was previously scanned before wouldn't be scanned again unless the digital file hash has been changed. Windows defender is heavy and inefficient. Most people are fine with it though because as I mentioned, they don't know what their computer is capable of or how fast it would usually be without it.

With any other AV, this does not happen and all those folder icons appear instantly. (except Kaspersky, Kaspersky also causes those folder icons to load slowly just like Windows Defender).
 
Last edited:

My Computers

System One System Two

  • OS
    Windows 11 Education
    Computer type
    Laptop
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    Alienware m15 R7
    CPU
    AMD Ryzen 9 6900HX
    Memory
    64 GB 4800 MHz DDR5 RAM
    Graphics Card(s)
    GeForce RTX 3080 Ti 16 GB GDDR6
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    15.6" QHD 240Hz 2ms 400-Nit Screen + Alienware 38 Curved Gaming Monitor AW3821DW
    Screen Resolution
    WQHD (3440 x 1440)
    Hard Drives
    Western Digital PC SN810 1TB SSD + Toshiba Kioxia KXG70PN84T094TB 4TB SSD
    PSU
    240W AC Power Adapter (supports 100-240V)
    Cooling
    Noctua NT-H2 + Fujipoly Extreme Thermal Pads
    Keyboard
    Alienware Low-Profile RGB Mechanical Gaming Keyboard AW510K
    Mouse
    Logitech MX Anywhere 3
    Internet Speed
    1 GBPS Down / 300 MBPS Up
    Browser
    Google Chrome
    Antivirus
    Windows Defender
  • Operating System
    Windows 11 Education
    Computer type
    Laptop
    Manufacturer/Model
    Dell XPS 13 9310
    CPU
    i7-1185G7
    Motherboard
    Intel Tiger Lake-UP3 IMC Chipset
    Memory
    32 GB 4267MHz Quad LPDDR4 SDRAM
    Graphics card(s)
    Intel Iris Xe Graphics
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    13.4" OLED 3.5K 400-Nit Screen + Alienware 38 Curved Gaming Monitor AW3821DW
    Screen Resolution
    WQHD (3440 x 1440)
    Hard Drives
    Samsung PM9A1 2TB SSD
    PSU
    230W AC Power Adapter (supports 100-240V)
    Cooling
    Noctua NT-H1 + Fujipoly Extreme Thermal Pads
    Mouse
    Logitech MX Anywhere 3
    Keyboard
    Alienware Low-Profile RGB Mechanical Gaming Keyboard AW510K
    Internet Speed
    1 GBPS Down / 300 MBPS Up
    Browser
    Google Chrome
    Antivirus
    Windows Defender

atinfo

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Forget benchmarks, I have a folder on my D: partition called Software. That is where I place all the setup files of the programs I use. In that folder also, there are many sub-folders that contain portable apps (ie. Firefox portable). I have assigned a custom icon for every folder in there to make it easy to distinguish. When I am using Windows Defender, simply opening the Software folder results in the icons appearing one by one slowly despite me having a super fast laptop and SSD. This is because Windows Defender will keep on scanning every file/folder over and over again let alone the fact that it causes a bigger performance hit when it scans. Other Antivirus programs are either much lighter when scanning or better yet, like ESET NOD32 for example, it has a whitelist feature so any file that was previously scanned before wouldn't be scanned again unless the digital file hash has been changed. Windows defender is heavy and inefficient. Most people are fine with it though because as I mentioned, they don't know what their computer is capable of or how fast it would usually be without it.

With any other AV, this does not happen and all those folder icons appear instantly. (except Kaspersky, Kaspersky also causes those folder icons to load slowly just like Windows Defender).
I have this problem, too (like you, I have many folders with custom icons which contain portable apps and data). I thought it was the new Windows 11 UI (Explorer) which causes lag when opening a folder. I had no problem with those folders and their custom icons on Windows 10 (with ESET Internet Security). After upgrading to Windows 11, I decided to use Windows native AV/Defender instead of a third-party AV. Since then, opening/browsing folders has been slow (on SSD).
 

My Computer

System One

  • OS
    Win 11 Enterprise
    Computer type
    Laptop
    CPU
    i7
    Hard Drives
    SSD

TairikuOkami

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Also, if the only way to see any performance loss is to run benchmark programs, then does it matter?
Without Defender, everything is instantaneous. With Defender, everything is sluggish, I can see icons in explorer loading one by one.
 

My Computer

System One

  • OS
    Windows 11 Home
    CPU
    AMD Ryzen 5 3600 (07/19)
    Motherboard
    MSI B450 TOMAHAWK 7C02v1E (07/19)
    Memory
    4x 8GB ADATA XPG GAMMIX D10 DDR4 3200MHz CL16
    Graphics Card(s)
    MSI Radeon RX 580 ARMOR 8G OC (08/19)
    Sound Card
    Creative Sound Blaster Z (11/16)
    Monitor(s) Displays
    24" AOC G2460VQ6 (01/19)
    Screen Resolution
    1920×1080@75Hz + FreeSync (DisplayPort)
    Hard Drives
    ADATA XPG GAMMIX S11 Pro SSD 512GB (07/19)
    PSU
    Seasonic M12II-520 80 Plus Bronze (11/16)
    Case
    Lian Li PC-7NB + 3x Noctua NF-S12A FLX@700rpm (11/16)
    Cooling
    CPU Cooler Noctua NH-U12S@700rpm
    Keyboard
    HP Wired Desktop 320K Keyboard (04/22)
    Mouse
    HP Wireless Silent 280M Mouse (05/21)
    Internet Speed
    400/40 Mbps via RouterOS (05/21) + TCP Optimizer
    Browser
    Edge with SwissCows (No FB/Google) + Brave for YouTube + LibreWolf for FB
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    None + Binisoft WFC
    Other Info
    Headphones: Sennheiser RS170 (09/10)

Winuser

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Without Defender, everything is instantaneous. With Defender, everything is sluggish, I can see icons in explorer loading one by one.
We don't have any performance issues with Defender that causes our devices to show a noticeable impact. It must depend on what resources are running in the background.
Edit: I do believe that it is a problem. It's just not a problem that a lot of people will notice.
 

My Computers

System One System Two

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    PowerSpec B746
    CPU
    Intel Core i7-10700K
    Motherboard
    ASRock Z490 Phantom Gaming 4/ax
    Memory
    16GB (8GB PC4-19200 DDR4 SDRAM x2)
    Graphics Card(s)
    NVIDIA GeForce GTX 1050 TI
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    Samsung SAM0A87 Samsung SAM0D32
    Screen Resolution
    1920 x 1080
    Hard Drives
    NVMe WDC WDS100T2B0C-00PXH0 1TB
    Samsung SSD 860 EVO 1TB
    PSU
    750 Watts (62.5A)
    Case
    PowerSpec/Lian Li ATX 205
    Keyboard
    Logitech K270
    Mouse
    Logitech M185
    Browser
    Microsoft Edge and Firefox
    Antivirus
    ESET Internet Security
  • Operating System
    Windows 11 Dev
    Computer type
    Laptop
    Manufacturer/Model
    HP Envy x360 15-ds1083cl
    CPU
    AMD Ryzen 7 4700U 2.0GHZ
    Memory
    16 MB DDR 4-2666
    Graphics card(s)
    AMD Radeon
    Monitor(s) Displays
    15.6"
    Screen Resolution
    1920x1080
    Hard Drives
    PCIe NVMe M.2 512GB
    Browser
    Firefox, Edge and Edge Canary
    Antivirus
    ESET Internet Security

TairikuOkami

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It must depend on what resources are running in the background.
Clean installed Windows every single time, 8/10/11. Laptop is completely unusable with Defender.
 

My Computer

System One

  • OS
    Windows 11 Home
    CPU
    AMD Ryzen 5 3600 (07/19)
    Motherboard
    MSI B450 TOMAHAWK 7C02v1E (07/19)
    Memory
    4x 8GB ADATA XPG GAMMIX D10 DDR4 3200MHz CL16
    Graphics Card(s)
    MSI Radeon RX 580 ARMOR 8G OC (08/19)
    Sound Card
    Creative Sound Blaster Z (11/16)
    Monitor(s) Displays
    24" AOC G2460VQ6 (01/19)
    Screen Resolution
    1920×1080@75Hz + FreeSync (DisplayPort)
    Hard Drives
    ADATA XPG GAMMIX S11 Pro SSD 512GB (07/19)
    PSU
    Seasonic M12II-520 80 Plus Bronze (11/16)
    Case
    Lian Li PC-7NB + 3x Noctua NF-S12A FLX@700rpm (11/16)
    Cooling
    CPU Cooler Noctua NH-U12S@700rpm
    Keyboard
    HP Wired Desktop 320K Keyboard (04/22)
    Mouse
    HP Wireless Silent 280M Mouse (05/21)
    Internet Speed
    400/40 Mbps via RouterOS (05/21) + TCP Optimizer
    Browser
    Edge with SwissCows (No FB/Google) + Brave for YouTube + LibreWolf for FB
    Antivirus
    None + Binisoft WFC
    Other Info
    Headphones: Sennheiser RS170 (09/10)

Cromax

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10:06 PM
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131
OS
Windows 11
You *think* you don't have any performance loss because you don't know how your PC performs without Windows Defender or have never benchmarked it. If you have, then you must be really special that all the reports have confirmed this but in some mysterious way, your computer is so special that it doesn't suffer from this performance loss. :ROFLMAO:
sry i had win 11 version where i completely uninstalled defender and literally deleted files and services and now with defender it works pretty much the same
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    -
    CPU
    4770k
    Motherboard
    Asus Maximus Formula VI
    Memory
    16 gb Kingston
    Graphics Card(s)
    2070 super

Spartan

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101
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Dubai
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Windows 11 Education
sry i had win 11 version where i completely uninstalled defender and literally deleted files and services and now with defender it works pretty much the same
no need to apologize. Use what seems best to *you*.
 

My Computers

System One System Two

  • OS
    Windows 11 Education
    Computer type
    Laptop
    Manufacturer/Model
    Alienware m15 R7
    CPU
    AMD Ryzen 9 6900HX
    Memory
    64 GB 4800 MHz DDR5 RAM
    Graphics Card(s)
    GeForce RTX 3080 Ti 16 GB GDDR6
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    15.6" QHD 240Hz 2ms 400-Nit Screen + Alienware 38 Curved Gaming Monitor AW3821DW
    Screen Resolution
    WQHD (3440 x 1440)
    Hard Drives
    Western Digital PC SN810 1TB SSD + Toshiba Kioxia KXG70PN84T094TB 4TB SSD
    PSU
    240W AC Power Adapter (supports 100-240V)
    Cooling
    Noctua NT-H2 + Fujipoly Extreme Thermal Pads
    Keyboard
    Alienware Low-Profile RGB Mechanical Gaming Keyboard AW510K
    Mouse
    Logitech MX Anywhere 3
    Internet Speed
    1 GBPS Down / 300 MBPS Up
    Browser
    Google Chrome
    Antivirus
    Windows Defender
  • Operating System
    Windows 11 Education
    Computer type
    Laptop
    Manufacturer/Model
    Dell XPS 13 9310
    CPU
    i7-1185G7
    Motherboard
    Intel Tiger Lake-UP3 IMC Chipset
    Memory
    32 GB 4267MHz Quad LPDDR4 SDRAM
    Graphics card(s)
    Intel Iris Xe Graphics
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    13.4" OLED 3.5K 400-Nit Screen + Alienware 38 Curved Gaming Monitor AW3821DW
    Screen Resolution
    WQHD (3440 x 1440)
    Hard Drives
    Samsung PM9A1 2TB SSD
    PSU
    230W AC Power Adapter (supports 100-240V)
    Cooling
    Noctua NT-H1 + Fujipoly Extreme Thermal Pads
    Mouse
    Logitech MX Anywhere 3
    Keyboard
    Alienware Low-Profile RGB Mechanical Gaming Keyboard AW510K
    Internet Speed
    1 GBPS Down / 300 MBPS Up
    Browser
    Google Chrome
    Antivirus
    Windows Defender

Spartan

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Windows 11 Education
We don't have any performance issues with Defender that causes our devices to show a noticeable impact. It must depend on what resources are running in the background.
Edit: I do believe that it is a problem. It's just not a problem that a lot of people will notice.
this problem has nothing to do with resources. It happens right from when I format a machine until loading all drivers/software. The moment you disable Windows Defender. The machine comes to life and everything is snappy.

PS: Look at my signature, I am talking about high end laptops, which is all what I've used before.
 

My Computers

System One System Two

  • OS
    Windows 11 Education
    Computer type
    Laptop
    Manufacturer/Model
    Alienware m15 R7
    CPU
    AMD Ryzen 9 6900HX
    Memory
    64 GB 4800 MHz DDR5 RAM
    Graphics Card(s)
    GeForce RTX 3080 Ti 16 GB GDDR6
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    15.6" QHD 240Hz 2ms 400-Nit Screen + Alienware 38 Curved Gaming Monitor AW3821DW
    Screen Resolution
    WQHD (3440 x 1440)
    Hard Drives
    Western Digital PC SN810 1TB SSD + Toshiba Kioxia KXG70PN84T094TB 4TB SSD
    PSU
    240W AC Power Adapter (supports 100-240V)
    Cooling
    Noctua NT-H2 + Fujipoly Extreme Thermal Pads
    Keyboard
    Alienware Low-Profile RGB Mechanical Gaming Keyboard AW510K
    Mouse
    Logitech MX Anywhere 3
    Internet Speed
    1 GBPS Down / 300 MBPS Up
    Browser
    Google Chrome
    Antivirus
    Windows Defender
  • Operating System
    Windows 11 Education
    Computer type
    Laptop
    Manufacturer/Model
    Dell XPS 13 9310
    CPU
    i7-1185G7
    Motherboard
    Intel Tiger Lake-UP3 IMC Chipset
    Memory
    32 GB 4267MHz Quad LPDDR4 SDRAM
    Graphics card(s)
    Intel Iris Xe Graphics
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    13.4" OLED 3.5K 400-Nit Screen + Alienware 38 Curved Gaming Monitor AW3821DW
    Screen Resolution
    WQHD (3440 x 1440)
    Hard Drives
    Samsung PM9A1 2TB SSD
    PSU
    230W AC Power Adapter (supports 100-240V)
    Cooling
    Noctua NT-H1 + Fujipoly Extreme Thermal Pads
    Mouse
    Logitech MX Anywhere 3
    Keyboard
    Alienware Low-Profile RGB Mechanical Gaming Keyboard AW510K
    Internet Speed
    1 GBPS Down / 300 MBPS Up
    Browser
    Google Chrome
    Antivirus
    Windows Defender

Cromax

Active member
Local time
10:06 PM
Posts
131
OS
Windows 11
this problem has nothing to do with resources. It happens right from when I format a machine until loading all drivers/software. The moment you disable Windows Defender. The machine comes to life and everything is snappy.

PS: Look at my signature, I am talking about high end laptops, which is all what I've used before.
reason I did it was similar xp before and I concluded it was bc in-place upgrade and not a clean install cause after a clean install it disappeared
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    -
    CPU
    4770k
    Motherboard
    Asus Maximus Formula VI
    Memory
    16 gb Kingston
    Graphics Card(s)
    2070 super

TraderGary

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Atlanta, GA, USA
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Windows 11 Pro
this problem has nothing to do with resources. It happens right from when I format a machine until loading all drivers/software. The moment you disable Windows Defender. The machine comes to life and everything is snappy.

PS: Look at my signature, I am talking about high end laptops, which is all what I've used before.
If you look at "My Computer", I too have a high-end laptop. My laptop is very snappy and I see no difference with and without Windows Security (Defender). I'm using Windows 11 Pro 22000.778. What is it that causes this problem for some people?
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell XPS 15 9510 OLED
    CPU
    11th Gen i9 -11900H
    Memory
    32 GB 3200 MHz DDR4
    Graphics Card(s)
    NVIDIA® GeForce® RTX 3050Ti
    Monitor(s) Displays
    15.6" OLED Infinity Edge Touch
    Screen Resolution
    16:10 Aspect Ratio (3456 x 2160)
    Hard Drives
    1 Terabyte M.2 PCIe NVMe SSD
    2 Thunderbolt™ 4 (USB Type-C™)
    1 USB 3.2 Gen 2 (USB Type-C™)
    SD Card Reader (SD, SDHC, SDXC)
    Internet Speed
    700 Mbps, 24 Mbps
    Browser
    Microsoft Edge (Chromium) + Bing
    Antivirus
    Microsoft Windows Security (Defender)
    Other Info
    Microsoft 365 subscription (Office)
    Microsoft OneDrive 1TB Cloud
    Microsoft File History
    Microsoft Outlook
    Microsoft OneNote

    Interactive Brokers Trader Workstation
    Lightroom/Photoshop subscription
    DaVinci Resolve Studio

Winuser

Well-known member
Pro User
VIP
Local time
4:06 PM
Posts
3,381
OS
Windows 11
this problem has nothing to do with resources. It happens right from when I format a machine until loading all drivers/software. The moment you disable Windows Defender. The machine comes to life and everything is snappy.

PS: Look at my signature, I am talking about high end laptops, which is all what I've used before.
I'm sorry, but you have another reason why you are getting such a performance hit. All of the Intel devices that I have that are using Defender are not seeing the problem you and others are having.
 

My Computers

System One System Two

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    PowerSpec B746
    CPU
    Intel Core i7-10700K
    Motherboard
    ASRock Z490 Phantom Gaming 4/ax
    Memory
    16GB (8GB PC4-19200 DDR4 SDRAM x2)
    Graphics Card(s)
    NVIDIA GeForce GTX 1050 TI
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    Samsung SAM0A87 Samsung SAM0D32
    Screen Resolution
    1920 x 1080
    Hard Drives
    NVMe WDC WDS100T2B0C-00PXH0 1TB
    Samsung SSD 860 EVO 1TB
    PSU
    750 Watts (62.5A)
    Case
    PowerSpec/Lian Li ATX 205
    Keyboard
    Logitech K270
    Mouse
    Logitech M185
    Browser
    Microsoft Edge and Firefox
    Antivirus
    ESET Internet Security
  • Operating System
    Windows 11 Dev
    Computer type
    Laptop
    Manufacturer/Model
    HP Envy x360 15-ds1083cl
    CPU
    AMD Ryzen 7 4700U 2.0GHZ
    Memory
    16 MB DDR 4-2666
    Graphics card(s)
    AMD Radeon
    Monitor(s) Displays
    15.6"
    Screen Resolution
    1920x1080
    Hard Drives
    PCIe NVMe M.2 512GB
    Browser
    Firefox, Edge and Edge Canary
    Antivirus
    ESET Internet Security

bikemanI7

Active member
Local time
4:06 PM
Posts
121
OS
Windows 11 Pro x64
No Noticeable slowdown even on my Quad Core Intel I7 7700HQ Laptop, even checked external drive with alot of executables from my recent Windows 11 clean install, and all the icons loaded quickly,

Games load quick on both systems, System performance is excellent on both Windows 10 Home Gaming Laptop and Windows 11 Pro running Defender

Overall very happy with How Defender performs, Nice and Silent and seems to do its job as whenever i scan the systems with Eset Online Scan or Malwarebytes Free nothing is ever found
 

My Computer

System One

  • OS
    Windows 11 Pro x64
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom
    CPU
    Intel I7 10700
    Motherboard
    Gigabyte B460M_DS3H Rev 1.0
    Memory
    16GB DDR4 2400mhz
    Graphics Card(s)
    EVGA Geforce 1660 Super
    Sound Card
    Onboard Audio
    Monitor(s) Displays
    Asus VG245H
    Screen Resolution
    1920x1080
    Hard Drives
    M.2 Samsung 970 Evo Plus 500GB Boot
    Samsung 860 Evo 1TB-Game SSD
    Western Digital Black 4TB Storage Drive

    External
    Western Digital Elements 500GB
    Western Digital My Passport 2TB
    Toshiba 2TB in External Enclosure
    Seagate 8TB in External Enclosure
    PSU
    EVGA G3 650 Watt
    Case
    Thermaltake V200 TG RGB
    Cooling
    Intel Stock CPU Cooler, 3 Front Intake Fans, 1 120 Exhaust in rear of case
    Keyboard
    Logitech G213
    Mouse
    Logitech G502 Hero
    Internet Speed
    Extreme 600Mbps/20Mbps upload
    Browser
    MS Edge Chromium
    Antivirus
    Windows Defender, Malwarebytes Free
    Other Info
    UEFI, Secure Boot, TPM 2.0, Macrium 8 Home Edition

paulhatton

Member
Local time
9:06 PM
Posts
52
OS
Windows 11
Device name DESKTOP-JR9S079
Processor 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz 2.80 GHz
Installed RAM 8.00 GB (7.64 GB usable)
Device ID ECE3C0BA-74CB-49B3-80C9-3DCC459A18C6
Product ID 00330-80000-00000-AA963
System type 64-bit operating system, x64-based processor
Pen and touch No pen or touch input is available for this display

Edition Windows 11 Pro
Version 21H2
Installed on ‎27/‎06/‎2022
OS build 22000.778
Experience Windows Feature Experience Pack 1000.22000.778.0

Since I bought this AIO Dell PC early this year I have never had anything but rocket like performance and boot up times of less than 10 seconds from "cold"
And yes always Windows defender with all options on and untouched and occasional weekly scans with Simply Trojan remover.
And I do not spend my time entirely on "virtuous "websites either.
Never a mess up.
Paul
 

My Computer

System One

  • OS
    Windows 11
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