uBlock Origin causes long lags


TVeblen

TVeblen

Well-known member
Member
VIP
Local time
8:55 AM
Posts
290
OS
Windows 11 Pro 23H2
I run Firefox with the uBlock Origin extension to block ads. I formerly used Adblock Plus.
With uBlock enabled I experience long lags connecting to websites, sometimes 2 to 4 seconds, even common ones like DuckDuckGo and Google.
If I disable uBlock then everything is snappy - almost instantaneous connection.
I don't recall having any kind of lag with AdBlock Plus.

Before I switch back I want to be sure that I don't just have the extension configured wrong.
Does anyone else use uBlock with Firefox? Do you experience this problem?

Other than the lags, the extension is excellent at blocking popups and ads.
 
Windows Build/Version
Win 11 23H2

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro 23H2Intel i7-13700KCorsair Vengence 5600 - 32GBMSI RTX3060 Ventus 2x 12GB
    OS
    Windows 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self Built
    CPU
    Intel i7-13700K
    Motherboard
    MSI PRO Z790-A WiFi
    Memory
    Corsair Vengence 5600 - 32GB
    Graphics Card(s)
    MSI RTX3060 Ventus 2x 12GB
    Sound Card
    On board - Realtek ALC4080
    Monitor(s) Displays
    LG 27GL850
    Screen Resolution
    2560 x 1440
    Hard Drives
    WD Black SN850X Nvme - 1TB
    WD Black 6TB HDD 256MB cache CMR
    WD Black 6TB HDD 128MB cache CMR
    PSU
    Corsair RM850x
    Case
    Fractal Design - Define 7
    Cooling
    Deepcool AK400
    Keyboard
    MS KC0405
    Mouse
    MS Model 1113 / MS Wireless Mobile Mouse 3500
    Internet Speed
    940 Mbps
    Browser
    Firefox
    Antivirus
    Windows Security
    Other Info
    I have a Case Speaker!
    I have a Blueray Disk drive!

  • At a glance

    Windows 10 Pro 22H2i7-9700KCorsair Vengence 32GBEVGA GTX1060
    Operating System
    Windows 10 Pro 22H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self Built
    CPU
    i7-9700K
    Motherboard
    Asus Prime Z390-A
    Memory
    Corsair Vengence 32GB
    Graphics card(s)
    EVGA GTX1060
    Sound Card
    On Board
    Monitor(s) Displays
    Acer 27"
    Screen Resolution
    1920 x 1080
    Hard Drives
    WD Black Nvme 500GB
    Toshiba X300 5TB
    PSU
    Corsair RM850x
    Case
    Antec P101 Silent
    Cooling
    CoolerMaster Hyper T4
    Keyboard
    MS KC0405
    Mouse
    Logitec M-U0007
    Internet Speed
    940 Mbps
    Browser
    Firefox
    Antivirus
    Avast!
    Other Info
    I have a Case Speaker!
Been using it with Firefox for several years now. I occasionally run into a site where I have to disable it for that site. But as for slowdowns not sure I've really noticed anything lately. At least it doesn't happen often enough for me to question whether it's uBlock causing it or not. There is a current issue for many with Youtube causing a loading slowdown but that may have more to do with Firefox rather than uBlock.
 

My Computer My Computer

At a glance

Win 7/10/11
OS
Win 7/10/11
Computer type
PC/Desktop
Other Info
I'm a computer enthusiast so have quite a few systems that I run. More like an advanced hobby.
Discussing ad blockers is against forum rules, but I'll say only, to troubleshoot performance issue, try disabling static filters and then enabling one by one until you find balance.
Test each filter on multiple sites before leaving it enabled.

If you have dynamic filter enabled(advanced option), keep it at default and don't change anything except to troubleshoot.
 

My Computer My Computer

At a glance

Windows 11 Pro 23H2Intel i3 8100 @3.6Ghz1 x 16GB DDR4 @2400 MHzNvidia GeForce GT 1030 2GB SDDR4
OS
Windows 11 Pro 23H2
Computer type
PC/Desktop
Manufacturer/Model
MSI / MS-7B29
CPU
Intel i3 8100 @3.6Ghz
Motherboard
H310M PRO-VDH (MS-7B29)
Memory
1 x 16GB DDR4 @2400 MHz
Graphics Card(s)
Nvidia GeForce GT 1030 2GB SDDR4
Sound Card
Realtek VEN_10EC&DEV_0887 / NVIDIA VEN_10DE&DEV_0081
Monitor(s) Displays
Acer V226HQL
Screen Resolution
1920 x 1080
Hard Drives
SSD 500 GB Crucial MX500 / HDD 1 TB TOSHIBA DT01ACA100
PSU
ATX, details unknown
Case
Everest 551B
Cooling
details unknown
Keyboard
Mechanical Gaming Hydra R7 - Rampage
Mouse
Logitech G703
Internet Speed
Down: 28Mbps / Up: 19Mbps
Browser
Microsoft Edge
Antivirus
Microsoft Defender Antivirus
Other Info
Bluetooth: TP Link 5.0 Nano USB adapter UB500
WLAN: D-Link 150 Pico USB adapter, N standard
Web camera: Logitech C270 HD 720p @30fps
Microphone: Trust MICO, model 23790
@TVeblen
Right click on the Start menu and select Run.

Type in Firefox.exe -p and hit enter.

Make a note of the current profile so you may return to it if necessary. Create a new profile and set it to be the default, then click on Start Firefox.

You will need to setup Firefox again, sorry about that, but after you install uBlock Origin, try it out and see if it still lags when navigating to your usual sites.

If not, then complete the setup of the new Firefox profile. You may go back and delete the older profiles by running Firefox.exe -p again, if you wish to.

If it still lags, then you have other issues affecting Firefox, you will need to track those down.

BTW: I also use uBlock Origin :-)
 

My Computer My Computer

At a glance

Windows 11 ProRyzen 9 3900XG-Skill RipjawsV F4-3600C18 (16GB x 2)Gigabyte RX 5700 XT Gaming OC
OS
Windows 11 Pro
Computer type
PC/Desktop
CPU
Ryzen 9 3900X
Motherboard
ASUS ROG Strix X570-E Gaming
Memory
G-Skill RipjawsV F4-3600C18 (16GB x 2)
Graphics Card(s)
Gigabyte RX 5700 XT Gaming OC
Sound Card
Realtek ALC1220P
Monitor(s) Displays
ASUS VE278 (x 2)
Screen Resolution
1920x1080
Hard Drives
Samsung 850 Pro 256GB
Samsung 970 Pro NVMe 512GB (x 2)
ST10000VN0004 10TB (x 2)
ST10000VN0008 10TB (x 2)
ST4000VN000 4TB (x 2)
PSU
Corsair HX1000
Case
Corsair Carbide 400R
Cooling
AMD Wraith Prism (Stock)
Keyboard
Logitech G213
Mouse
Logitech G502
Internet Speed
100Mbps down / 40Mbps up
Browser
Firefox - Chrome - Edge
Antivirus
Windows Defender - Clamwin
zebal said:
Discussing ad blockers is against forum rules, but I'll say only, to troubleshoot performance issue, try disabling static filters and then enabling one by one until you find balance.
Test each filter on multiple sites before leaving it enabled.

If you have dynamic filter enabled(advanced option), keep it at default and don't change anything except to troubleshoot.
Click to expand...
Static filters in uBlock I assume?
 

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro 23H2Intel i7-13700KCorsair Vengence 5600 - 32GBMSI RTX3060 Ventus 2x 12GB
    OS
    Windows 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self Built
    CPU
    Intel i7-13700K
    Motherboard
    MSI PRO Z790-A WiFi
    Memory
    Corsair Vengence 5600 - 32GB
    Graphics Card(s)
    MSI RTX3060 Ventus 2x 12GB
    Sound Card
    On board - Realtek ALC4080
    Monitor(s) Displays
    LG 27GL850
    Screen Resolution
    2560 x 1440
    Hard Drives
    WD Black SN850X Nvme - 1TB
    WD Black 6TB HDD 256MB cache CMR
    WD Black 6TB HDD 128MB cache CMR
    PSU
    Corsair RM850x
    Case
    Fractal Design - Define 7
    Cooling
    Deepcool AK400
    Keyboard
    MS KC0405
    Mouse
    MS Model 1113 / MS Wireless Mobile Mouse 3500
    Internet Speed
    940 Mbps
    Browser
    Firefox
    Antivirus
    Windows Security
    Other Info
    I have a Case Speaker!
    I have a Blueray Disk drive!

  • At a glance

    Windows 10 Pro 22H2i7-9700KCorsair Vengence 32GBEVGA GTX1060
    Operating System
    Windows 10 Pro 22H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self Built
    CPU
    i7-9700K
    Motherboard
    Asus Prime Z390-A
    Memory
    Corsair Vengence 32GB
    Graphics card(s)
    EVGA GTX1060
    Sound Card
    On Board
    Monitor(s) Displays
    Acer 27"
    Screen Resolution
    1920 x 1080
    Hard Drives
    WD Black Nvme 500GB
    Toshiba X300 5TB
    PSU
    Corsair RM850x
    Case
    Antec P101 Silent
    Cooling
    CoolerMaster Hyper T4
    Keyboard
    MS KC0405
    Mouse
    Logitec M-U0007
    Internet Speed
    940 Mbps
    Browser
    Firefox
    Antivirus
    Avast!
    Other Info
    I have a Case Speaker!
trumpy81 said:
@TVeblen
Right click on the Start menu and select Run.

Type in Firefox.exe -p and hit enter.

Make a note of the current profile so you may return to it if necessary. Create a new profile and set it to be the default, then click on Start Firefox.

You will need to setup Firefox again, sorry about that, but after you install uBlock Origin, try it out and see if it still lags when navigating to your usual sites.

If not, then complete the setup of the new Firefox profile. You may go back and delete the older profiles by running Firefox.exe -p again, if you wish to.

If it still lags, then you have other issues affecting Firefox, you will need to track those down.

BTW: I also use uBlock Origin :-)
Click to expand...
I'll give that a try. Thanks
Might be this weekend though....
 

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro 23H2Intel i7-13700KCorsair Vengence 5600 - 32GBMSI RTX3060 Ventus 2x 12GB
    OS
    Windows 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self Built
    CPU
    Intel i7-13700K
    Motherboard
    MSI PRO Z790-A WiFi
    Memory
    Corsair Vengence 5600 - 32GB
    Graphics Card(s)
    MSI RTX3060 Ventus 2x 12GB
    Sound Card
    On board - Realtek ALC4080
    Monitor(s) Displays
    LG 27GL850
    Screen Resolution
    2560 x 1440
    Hard Drives
    WD Black SN850X Nvme - 1TB
    WD Black 6TB HDD 256MB cache CMR
    WD Black 6TB HDD 128MB cache CMR
    PSU
    Corsair RM850x
    Case
    Fractal Design - Define 7
    Cooling
    Deepcool AK400
    Keyboard
    MS KC0405
    Mouse
    MS Model 1113 / MS Wireless Mobile Mouse 3500
    Internet Speed
    940 Mbps
    Browser
    Firefox
    Antivirus
    Windows Security
    Other Info
    I have a Case Speaker!
    I have a Blueray Disk drive!

  • At a glance

    Windows 10 Pro 22H2i7-9700KCorsair Vengence 32GBEVGA GTX1060
    Operating System
    Windows 10 Pro 22H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self Built
    CPU
    i7-9700K
    Motherboard
    Asus Prime Z390-A
    Memory
    Corsair Vengence 32GB
    Graphics card(s)
    EVGA GTX1060
    Sound Card
    On Board
    Monitor(s) Displays
    Acer 27"
    Screen Resolution
    1920 x 1080
    Hard Drives
    WD Black Nvme 500GB
    Toshiba X300 5TB
    PSU
    Corsair RM850x
    Case
    Antec P101 Silent
    Cooling
    CoolerMaster Hyper T4
    Keyboard
    MS KC0405
    Mouse
    Logitec M-U0007
    Internet Speed
    940 Mbps
    Browser
    Firefox
    Antivirus
    Avast!
    Other Info
    I have a Case Speaker!
Good to know it is not supposed to act like this. That is helpful. Thanks All.
 

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro 23H2Intel i7-13700KCorsair Vengence 5600 - 32GBMSI RTX3060 Ventus 2x 12GB
    OS
    Windows 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self Built
    CPU
    Intel i7-13700K
    Motherboard
    MSI PRO Z790-A WiFi
    Memory
    Corsair Vengence 5600 - 32GB
    Graphics Card(s)
    MSI RTX3060 Ventus 2x 12GB
    Sound Card
    On board - Realtek ALC4080
    Monitor(s) Displays
    LG 27GL850
    Screen Resolution
    2560 x 1440
    Hard Drives
    WD Black SN850X Nvme - 1TB
    WD Black 6TB HDD 256MB cache CMR
    WD Black 6TB HDD 128MB cache CMR
    PSU
    Corsair RM850x
    Case
    Fractal Design - Define 7
    Cooling
    Deepcool AK400
    Keyboard
    MS KC0405
    Mouse
    MS Model 1113 / MS Wireless Mobile Mouse 3500
    Internet Speed
    940 Mbps
    Browser
    Firefox
    Antivirus
    Windows Security
    Other Info
    I have a Case Speaker!
    I have a Blueray Disk drive!

  • At a glance

    Windows 10 Pro 22H2i7-9700KCorsair Vengence 32GBEVGA GTX1060
    Operating System
    Windows 10 Pro 22H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self Built
    CPU
    i7-9700K
    Motherboard
    Asus Prime Z390-A
    Memory
    Corsair Vengence 32GB
    Graphics card(s)
    EVGA GTX1060
    Sound Card
    On Board
    Monitor(s) Displays
    Acer 27"
    Screen Resolution
    1920 x 1080
    Hard Drives
    WD Black Nvme 500GB
    Toshiba X300 5TB
    PSU
    Corsair RM850x
    Case
    Antec P101 Silent
    Cooling
    CoolerMaster Hyper T4
    Keyboard
    MS KC0405
    Mouse
    Logitec M-U0007
    Internet Speed
    940 Mbps
    Browser
    Firefox
    Antivirus
    Avast!
    Other Info
    I have a Case Speaker!
TVeblen said:
Do you experience this problem?
Click to expand...
Yeah, I have been experiencing these delays in reddit, youtube and some sites, didn't know ublock could be a reason, I will switch to adblock and try, thanks
 

My Computer My Computer

At a glance

Windows 11 23H2Intel i7-7700k16 GBIntel 630 onboard
OS
Windows 11 23H2
Computer type
PC/Desktop
Manufacturer/Model
Assembled
CPU
Intel i7-7700k
Motherboard
Asrock Z270 Taichi
Memory
16 GB
Graphics Card(s)
Intel 630 onboard
Sound Card
Onboard
Monitor(s) Displays
Benq 1080p
Screen Resolution
1920*1080
Hard Drives
NVMe, SSD and HDD
Case
Cooler Master
Keyboard
Asus wireless
Mouse
Asus Wireless
Internet Speed
75 Mbps
Browser
Chrome, Edge, Arc
Antivirus
Windows Defender
I was noticing this pause in Fire Fox and Edge using ublock for the last week or so. Just loading the bare Google search page took a few seconds. Since I've updated to Windows 11, it's back to normal with no pause. 🤷‍♂️
 

My Computer My Computer

At a glance

Windows 11 25H2Broadwell-e 6850K 4.5ghz @1.36v32GB Corsair LPM 3600 C16EVGA RTX 3080Ti FTW
OS
Windows 11 25H2
Computer type
PC/Desktop
Manufacturer/Model
EVGA home brew
CPU
Broadwell-e 6850K 4.5ghz @1.36v
Motherboard
EVGA X99 FTW K
Memory
32GB Corsair LPM 3600 C16
Graphics Card(s)
EVGA RTX 3080Ti FTW
Sound Card
Asus Centurion true 7.1 headset. (5 speakers in each earpeice)
Monitor(s) Displays
LG C4 55"
Screen Resolution
4K 144hz
Hard Drives
Various models of SSDs ~10TB No HDDs installed.
PSU
be quiet! BN516 Straight Power 12-1000w 80 Plus Platinum
Case
Corsair 780T modified to dual 200mm intake fans
Cooling
Corsair H110i
Keyboard
Corsair K95 Platinum
Mouse
Corsair M65 RGB Elite
Internet Speed
50Mbs
trumpy81 said:
Right click on the Start menu and select Run.

Type in Firefox.exe -p and hit enter.
Click to expand...
TVeblen said:
I'll give that a try. Thanks
Click to expand...

Another way to get there is to just enter about: profiles in the address bar.

EDIT: Remove the space between : p

it gave my this emoji :p without the space
 

My Computers My Computers

System One System Two

  • At a glance

    Win 11 Pro 25H2 26200.8655Intel® Core™ i7-14700KG.SKILL Ripjaws S5 Series 64GB (2 x 32GB) DDR5ASUS GeForce RTX 4070 Super 12GB
    OS
    Win 11 Pro 25H2 26200.8655
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self Built
    CPU
    Intel® Core™ i7-14700K
    Motherboard
    ASUS TUF Z690-PLUS WIFI BIOS 4505 11/29/25
    Memory
    G.SKILL Ripjaws S5 Series 64GB (2 x 32GB) DDR5
    Graphics Card(s)
    ASUS GeForce RTX 4070 Super 12GB
    Sound Card
    Sound Blaster AE-5 Plus
    Monitor(s) Displays
    ASUS TUF Gaming 27" 2K HDR Gaming
    Screen Resolution
    2560 x 1440
    Hard Drives
    Samsung 990 Pro 1TB NVMe (Win 11 25H2)
    SK hynix P41 500GB NVMe 25H2 DEV/Games
    SK hynix P41 2TB NVMe (x3)
    Crucial P3 Plus 4TB
    PSU
    Corsair RM850x Shift
    Case
    Antec Dark Phantom DP502 FLUX
    Cooling
    Corsair Nautilus 360 RS AIO
    Keyboard
    Logitech MK 320
    Mouse
    Razer Basilisk V3
    Internet Speed
    350Mbs
    Browser
    Firefox
    Antivirus
    Winows Security
    Other Info
    MR 8.1 Home

    System 3 Specs
    Win 11 Pro 25H2 26200.8655
    ASUS PRIME Z370-P II BIOS 3004 7/12/21
    Intel Core i7-8700 CPU @ 3.20GHz
    32GB DDR4 RAM (4x8)
    iGPU Intel UHD Graphics 630

  • At a glance

    Win 11 Pro 25H2 26200.8655Intel Core i7-11700F64 GB DDR4MSI GeForce RTX 3060 Ventus 2X 12GB
    Operating System
    Win 11 Pro 25H2 26200.8655
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self Built
    CPU
    Intel Core i7-11700F
    Motherboard
    Asus TUF Gaming Z590 Plus WiFi (BIOS 2803)
    Memory
    64 GB DDR4
    Graphics card(s)
    MSI GeForce RTX 3060 Ventus 2X 12GB
    Sound Card
    SoundBlaster Audigy Fx V2
    Monitor(s) Displays
    Samsung F27T350
    Screen Resolution
    1920x1080
    Hard Drives
    Samsung 980 Pro 1TB
    Samsung 970 EVO Plus 2TB
    Samsung 870 EVO 500GB SSD
    PSU
    Corsair HX750
    Case
    Cougar MX330-G Window
    Cooling
    Thermalright Frozen Edge 240 Black AIO
    Internet Speed
    350Mbps
    Browser
    Firefox
    Antivirus
    Windows Security
I tried Settings > Filter Lists > and unchecked the second item: "Suspend network activity until all filter lists are loaded".
It seems faster now. Too early to tell. I'll run it a few days like this and see.
 

My Computers My Computers

System One System Two

  • At a glance

    Windows 11 Pro 23H2Intel i7-13700KCorsair Vengence 5600 - 32GBMSI RTX3060 Ventus 2x 12GB
    OS
    Windows 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self Built
    CPU
    Intel i7-13700K
    Motherboard
    MSI PRO Z790-A WiFi
    Memory
    Corsair Vengence 5600 - 32GB
    Graphics Card(s)
    MSI RTX3060 Ventus 2x 12GB
    Sound Card
    On board - Realtek ALC4080
    Monitor(s) Displays
    LG 27GL850
    Screen Resolution
    2560 x 1440
    Hard Drives
    WD Black SN850X Nvme - 1TB
    WD Black 6TB HDD 256MB cache CMR
    WD Black 6TB HDD 128MB cache CMR
    PSU
    Corsair RM850x
    Case
    Fractal Design - Define 7
    Cooling
    Deepcool AK400
    Keyboard
    MS KC0405
    Mouse
    MS Model 1113 / MS Wireless Mobile Mouse 3500
    Internet Speed
    940 Mbps
    Browser
    Firefox
    Antivirus
    Windows Security
    Other Info
    I have a Case Speaker!
    I have a Blueray Disk drive!

  • At a glance

    Windows 10 Pro 22H2i7-9700KCorsair Vengence 32GBEVGA GTX1060
    Operating System
    Windows 10 Pro 22H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self Built
    CPU
    i7-9700K
    Motherboard
    Asus Prime Z390-A
    Memory
    Corsair Vengence 32GB
    Graphics card(s)
    EVGA GTX1060
    Sound Card
    On Board
    Monitor(s) Displays
    Acer 27"
    Screen Resolution
    1920 x 1080
    Hard Drives
    WD Black Nvme 500GB
    Toshiba X300 5TB
    PSU
    Corsair RM850x
    Case
    Antec P101 Silent
    Cooling
    CoolerMaster Hyper T4
    Keyboard
    MS KC0405
    Mouse
    Logitec M-U0007
    Internet Speed
    940 Mbps
    Browser
    Firefox
    Antivirus
    Avast!
    Other Info
    I have a Case Speaker!
You must log in or register to reply here.

Latest Support Threads

Latest Tutorials

Back
Top Bottom