Solved Copying speed suddenly dropped by 90%. What??


Thanks. That seems likely. I'm now getting better consistent speeds with FastCopy64 (Portable made by extracting files from the installer).
 

My Computers

System One System Two

  • OS
    11 Pro 24H2 26100.2454
    Computer type
    PC/Desktop
    Manufacturer/Model
    Lenovo ThinkCentre M920S SFF
    CPU
    i7-9700 @ 3.00GHz
    Motherboard
    Lenovo 3132
    Memory
    32GBDDR4 @ 2666MHz
    Graphics Card(s)
    Intel HD 630 Graphics onboard
    Sound Card
    Realtek HD Audio
    Monitor(s) Displays
    LG E2442
    Screen Resolution
    1920x1080
    Hard Drives
    1 x Samsung 970 EVO PLUS 500GB NVMe SSD, 1 x WD_BLACK SN770
    250GB NVMe SSD (OS and programs), 1 x WD_BLACK SN770
    500GB NVMe SSD (Data)
    Case
    Lenovo SFF
    Keyboard
    Cherry Stream TKL JK-8600US-2 Wired
    Mouse
    LogiTech M510 wireless
    Internet Speed
    Fast (for fixed wireless!)
    Browser
    Chrome, sometimes Firefox
    Antivirus
    Malwarebytes Premium & Defender (working together beautifully!)
  • Operating System
    11 Pro 24H2 26100.2454
    Computer type
    PC/Desktop
    Manufacturer/Model
    Lenovo ThinkCentre M920S SFF
    CPU
    i5-8400 @ 2.80GHz
    Motherboard
    Lenovo 3132
    Memory
    32GB DDR4 @ 2600MHz
    Graphics card(s)
    Intel HD 630 Graphics onboard
    Sound Card
    Realtek High Definition Audio onboard
    Monitor(s) Displays
    LG FULL HD (1920x1080@59Hz)
    Screen Resolution
    1920 x 1080
    Hard Drives
    1 x Samsung 970 EVO PLUS NVMe; 1 x Samsung 980 NVMe SSD
    Case
    Lenovo Think Centre SFF
    Keyboard
    Cherry Stream TKL JK-8600US-2 Wired
    Mouse
    LogiTech M510 wireless
    Internet Speed
    Fast (for fixed wireless!)
    Browser
    Chrome
    Antivirus
    Malwarebytes Premium and MS Defender, beautiful together
Wisewiz said:
Don't know what that burst effect was at the very beginning of the process, and I wish I could sustain it.
Click to expand...
That burst speed at the beginning is a bit of an illusion - it is simply files filling up a RAM buffer. Data being copied is filling up RAM faster than it can be written to disk (RAM is faster than disks).

Eventually the buffer gets filled and data can only be copied as fast as it can be written.

Eventually all data is copied, and buffer gets emptied.

This is perfectly normal.
 

My Computer

System One

  • OS
    Windows 11 Pro + Win11 Canary VM.
    Computer type
    Laptop
    Manufacturer/Model
    ASUS Zenbook 14
    CPU
    I9 13th gen i9-13900H 2.60 GHZ
    Motherboard
    Yep, Laptop has one.
    Memory
    16 GB soldered
    Graphics Card(s)
    Integrated Intel Iris XE
    Sound Card
    Realtek built in
    Monitor(s) Displays
    laptop OLED screen
    Screen Resolution
    2880x1800 touchscreen
    Hard Drives
    1 TB NVME SSD (only weakness is only one slot)
    PSU
    Internal + 65W thunderbolt USB4 charger
    Case
    Yep, got one
    Cooling
    Stella Artois (UK pint cans - 568 ml) - extra cost.
    Keyboard
    Built in UK keybd
    Mouse
    Bluetooth , wireless dongled, wired
    Internet Speed
    900 mbs (ethernet), wifi 6 typical 350-450 mb/s both up and down
    Browser
    Edge
    Antivirus
    Defender
    Other Info
    TPM 2.0, 2xUSB4 thunderbolt, 1xUsb3 (usb a), 1xUsb-c, hdmi out, 3.5 mm audio out/in combo, ASUS backlit trackpad (inc. switchable number pad)

    Macrium Reflect Home V8
    Office 365 Family (6 users each 1TB onedrive space)
    Hyper-V (a vm runs almost as fast as my older laptop)
Thanks for the information, @cereberus. Now I know. That PC is now working correctly, and with FastCopy, I’m getting really good results, given the specs of that machine. :giggle:
 

My Computers

System One System Two

  • OS
    11 Pro 24H2 26100.2454
    Computer type
    PC/Desktop
    Manufacturer/Model
    Lenovo ThinkCentre M920S SFF
    CPU
    i7-9700 @ 3.00GHz
    Motherboard
    Lenovo 3132
    Memory
    32GBDDR4 @ 2666MHz
    Graphics Card(s)
    Intel HD 630 Graphics onboard
    Sound Card
    Realtek HD Audio
    Monitor(s) Displays
    LG E2442
    Screen Resolution
    1920x1080
    Hard Drives
    1 x Samsung 970 EVO PLUS 500GB NVMe SSD, 1 x WD_BLACK SN770
    250GB NVMe SSD (OS and programs), 1 x WD_BLACK SN770
    500GB NVMe SSD (Data)
    Case
    Lenovo SFF
    Keyboard
    Cherry Stream TKL JK-8600US-2 Wired
    Mouse
    LogiTech M510 wireless
    Internet Speed
    Fast (for fixed wireless!)
    Browser
    Chrome, sometimes Firefox
    Antivirus
    Malwarebytes Premium & Defender (working together beautifully!)
  • Operating System
    11 Pro 24H2 26100.2454
    Computer type
    PC/Desktop
    Manufacturer/Model
    Lenovo ThinkCentre M920S SFF
    CPU
    i5-8400 @ 2.80GHz
    Motherboard
    Lenovo 3132
    Memory
    32GB DDR4 @ 2600MHz
    Graphics card(s)
    Intel HD 630 Graphics onboard
    Sound Card
    Realtek High Definition Audio onboard
    Monitor(s) Displays
    LG FULL HD (1920x1080@59Hz)
    Screen Resolution
    1920 x 1080
    Hard Drives
    1 x Samsung 970 EVO PLUS NVMe; 1 x Samsung 980 NVMe SSD
    Case
    Lenovo Think Centre SFF
    Keyboard
    Cherry Stream TKL JK-8600US-2 Wired
    Mouse
    LogiTech M510 wireless
    Internet Speed
    Fast (for fixed wireless!)
    Browser
    Chrome
    Antivirus
    Malwarebytes Premium and MS Defender, beautiful together
Robocopy seems to run better on older machines than the gui method, if you ever need that route
 

My Computer

System One

  • OS
    Windows 11 Pro
It looks like Win 11 hasn't improved in 1.5 years. In my case it's bursty and gets back down to 0 b/s every minute or so, and stays there for another minute or so, factually transferring files only half of the time.

1758143547720.webp1758143567008.webp
 

My Computer

System One

  • OS
    Win11
    Computer type
    PC/Desktop
If a USB drive, it means it's time to unplug the drive and reinsert the connector.
It usually means a very bad connection.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro x64 24H2
    Computer type
    PC/Desktop
    CPU
    Ryzen 9 5900X
    Motherboard
    ASRock B550 PG Velocita (UEFI-BIOS 3.90)
    Memory
    64 GB G.Skill RipJaws V F4-3200C16D-64GVK
    Graphics Card(s)
    ASRock Steel Legend Arc B580 12 GB
    Monitor(s) Displays
    Alienware AW3423DWF OLED ultrawide
    Hard Drives
    Samsung 990 Pro 1 TB NVMe SSD
    PSU
    eVGA Supernova 750 G3
    Case
    Corsair 275R
    Internet Speed
    VTel FTTH 1 Gb down and 1 Gb up
  • Operating System
    Windows 11 Home x64 25H2
    Computer type
    PC/Desktop
    CPU
    Ryzen 7 5800X3D
    Motherboard
    Asus ROG Strix B550-F Gaming (UEFI-BIOS version 3636)
    Memory
    32 GB (2x16 GB G.Skill TridentZ Neo)
    Graphics card(s)
    Sapphire Nitro+ Radeon RX 6750 XT
    Hard Drives
    Samsung 970 Pro 512 GB NVMe SSD
    PSU
    Corsair RM850x
    Case
    Fractal Focus G
That's not a Windows 11 issue (or else - it would happen to everyone).

Also, the fastest (most potent) builtin tool for file transfer - is robocopy:


But it's a command line tool. There's couple of open source front-end GUIs for it - created by students and such - but i didn't try any personally - so i don't know (which one is truly reliable or safe).
 

My Computer

System One

  • OS
    WinDOS 25H2
    Computer type
    Laptop
    CPU
    Intel & AMD
    Memory
    SO-DIMM SK Hynix 15.8 GB Dual-Channel DDR4-2666 (2 x 8 GB) 1329MHz (19-19-19-43)
    Graphics Card(s)
    nVidia RTX 2060 6GB Mobile GPU (TU106M)
    Sound Card
    Onbord Realtek ALC1220
    Screen Resolution
    1920 x 1080
    Hard Drives
    1x Samsung PM981 NVMe PCIe M.2 512GB / 1x Seagate Expansion ST1000LM035 1TB
Actually, I've seen that happen with USB FLASH drives here, but only certain models of FLASH drives.
 

My Computers

System One System Two

  • OS
    Win 11 Pro 25H2, Build 26200.8655
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Brew
    CPU
    Intel Core i5 14500
    Motherboard
    Gigabyte B760M G P WIFI
    Memory
    64GB DDR4
    Graphics Card(s)
    GeForce RTX 4060
    Sound Card
    Chipset Realtek
    Monitor(s) Displays
    LG 45" Ultragear, Acer 24" 1080p
    Screen Resolution
    5120x1440, 1920x1080
    Hard Drives
    Crucial P310 2TB 2280 PCIe Gen4 3D NAND NVMe M.2 SSD (O/S)
    Silicon Power 2TB US75 NVMe PCIe Gen4 M.2 2280 SSD (backup)
    Crucial BX500 2TB 3D NAND (2nd backup)
    Seagate 4TB Ironwolf, rotating HDD archive files
    External off-line backup Drives: 2 NVMe 4TB drives in external enclosures
    PSU
    Thermaltake Toughpower GF3 750W
    Case
    LIAN LI LANCOOL 216 E-ATX PC Case
    Cooling
    Lots of fans!
    Keyboard
    Microsoft Comfort Curve 2000
    Mouse
    Logitech G305
    Internet Speed
    Verizon FiOS 1GB
    Browser
    Firefox
    Antivirus
    Malware Bytes & Windows Defender Security
  • Operating System
    Win 11 Pro 25H2, Build 26200.8524
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Brew
    CPU
    Intel Core i5 14400
    Motherboard
    Gigabyte B760M DS3H AX
    Memory
    32GB DDR5
    Graphics card(s)
    Intel 700 Embedded GPU
    Sound Card
    Realtek Embedded
    Monitor(s) Displays
    27" HP 1080p
    Screen Resolution
    1920x1080
    Hard Drives
    Crucial P310 2TB 2280 PCIe Gen4 eD NAND PCIe SSD
    Samsung EVO 990 2TB NVMe Gen4 SSD
    Samsung 2TB SATA SSD
    PSU
    Thermaltake Smart BM3 650W
    Case
    Okinos Micro ATX Case
    Cooling
    Fans
    Keyboard
    Microsoft Comfort Curve 2000
    Mouse
    Logitech G305
    Internet Speed
    Verizon FiOS 1GB
    Browser
    Firefox
    Antivirus
    Malware Bytes & Windows Defender Security
gunrunnerjohn said:
Actually, I've seen that happen with USB FLASH drives here
Click to expand...
It happens to me often, IIRC, even with a good USB drive, I will see similar and that's the symptom of an extremely poor signal. It would be my cue to reinsert it. I would often suspect dust or the like, got in the way of my USB port. I actually had an incident like that very recently. If it hesitates when reading, I pull it out and reinsert it.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro x64 24H2
    Computer type
    PC/Desktop
    CPU
    Ryzen 9 5900X
    Motherboard
    ASRock B550 PG Velocita (UEFI-BIOS 3.90)
    Memory
    64 GB G.Skill RipJaws V F4-3200C16D-64GVK
    Graphics Card(s)
    ASRock Steel Legend Arc B580 12 GB
    Monitor(s) Displays
    Alienware AW3423DWF OLED ultrawide
    Hard Drives
    Samsung 990 Pro 1 TB NVMe SSD
    PSU
    eVGA Supernova 750 G3
    Case
    Corsair 275R
    Internet Speed
    VTel FTTH 1 Gb down and 1 Gb up
  • Operating System
    Windows 11 Home x64 25H2
    Computer type
    PC/Desktop
    CPU
    Ryzen 7 5800X3D
    Motherboard
    Asus ROG Strix B550-F Gaming (UEFI-BIOS version 3636)
    Memory
    32 GB (2x16 GB G.Skill TridentZ Neo)
    Graphics card(s)
    Sapphire Nitro+ Radeon RX 6750 XT
    Hard Drives
    Samsung 970 Pro 512 GB NVMe SSD
    PSU
    Corsair RM850x
    Case
    Fractal Focus G
I think I was able to fix the problem by using another SATA port for the hard drive (I was copying lots of small files from the SSD to an internal hard drive in Win 11 Pro).
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom Build
    CPU
    i5-13400F
    Motherboard
    Gigabyte B-760M
    Memory
    16 GB
    Graphics Card(s)
    RTX 4060
    Sound Card
    internal
    Monitor(s) Displays
    AOC 27 gaming
    Screen Resolution
    1920 x 1080
    Hard Drives
    Kingston 2 TB M.2
    PSU
    Thermaltake 700W
    Case
    DarkFlash C285P
    Cooling
    Kingsman KA-R240 ARGB Liquid Cooling
    Keyboard
    Redragon Kala
    Mouse
    Marvo G945
    Internet Speed
    400 Mbps DL/UL
    Browser
    Firefox, Mullvad
    Antivirus
    Kaspersky Standard
    Other Info
    Adguard for Desktop, Kerish PC Doctor, PerfectDisk Pro with OptiWrite, AOMEI Backupper Pro, Open-Shell, ExplorerPatcher
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