1. #1

    DPC latency issues, cracking, stuttering and more

    So story so far goes, I've had 5 systems over the passed 2 years with almost entirely different parts between each build each with better specs than the previous, and we're talking motherboard, GPU, CPU, power unit, etc... however every single one of them has had exactly the same issue and I'm literally out of ideas about what could be wrong at this stage. This is a plague on my life.

    The issue includes gradually worsening latency issues... we're talking system lag, sound popping, and game lag on pretty much anything, old games, brand new games, occasional freeze ups and micro stutter, and this all on a INTEL Skylake Core i7 6700K OC 4.5Ghz, ASUS Z170-P with a MSI GTX 980TI.

    So, the only things I can think of that have been reoccurring with all 5 systems are the monitor (4K Samsung), the speakers, MY HOME?, my capture card, an old Elgato I use paired with my PS3, my external storage devices... and some of the programs I use. This includes general stuff like Skype, Steam, Audacity, Mirrilis Action, Vegas Pro, GIMP, OBS all of which I've purged many many times either uninstalling them or flat out doing a clean system reinstall, but this rarely seemed to fix any problems.

    If you have any questions, please feel free to ask, I'm about to start on my 6th and would really rather it didn't have similar issues, I'm losing a lot of money because of this and a LOT of time from research and getting different components repaired, lol.

    Following recommendations from this thread: Windows 8.1 update causes high DPC latency for wdf01000.sys and ndis.sys I've done an xperf trace and uploaded it here: Dropbox - CPU.7z unfortunately, I don't understand the results it's produced and would appreciate some direction. :)

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  2. #2
    xilolee's Avatar
    Join Date
    Dec 2013
    World, Europe, Italy
    • specs System Specs
      • Manufacturer:
      • Model Number:
      • Motherboard:
        ASROCK FM2A88M Pro3+ chipset A88X Bolton-D4
      • CPU:
        A10-7800, 4 CPU, 4 thr, 65/45W, FM2+, 28nm, Steamroller/Kaveri
      • Memory:
        10GB (Nanya and kingston ddr3-1333 9-9-9-24)
      • Graphics:
        Radeon R7 720MHz (8 GPU cores, integrated in CPU)
      • Sound Card:
        RealTek ALC662 (integrated in MB)
      • Hard Drives:
        Seagate ST500DM002-1BD142 500GB 7200RPM
      • Power Supply:
        SuperFlower 450W 80+ Platinum (SF-450P14PE)
      • Case:
        Sharkoon VG4-S
      • Cooling:
        Realtek RTL8111GR (NIC integrated in MB)
      • Display:
        Samsung SyncMaster SA100 LS22A100NS-EN
      • Operating System:
        Windows 10 Home/Standard x64

    Re: DPC latency issues, cracking, stuttering and more

    Hi Alonzorion.

    • Please provide answers for (answer the best that you can):
      1. System Manufacturer?
      2. Laptop or Desktop?
      3. Exact model number (if laptop, check label on bottom)
      4. OS ? (Windows 10, 8.1, 8, 7, Vista)
      5. x86 (32bit) or x64 (64bit)?
      6. Service pack?
      7. What was original installed OS on system?
      8. Is the OS an OEM version (came pre-installed on system) or full retail version (YOU purchased it from retailer)?
      9. Age of system? (hardware)
      10. Age of OS installation?
      11. Have you re-installed the OS?
      12. CPU
      13. RAM (brand, model, which slots are you using?)
      14. Video Card
      15. MotherBoard - (if NOT a laptop)
      16. Power Supply - brand & wattage (if laptop, skip this one)
      17. What security software are you using? (Firewall, antivirus, antimalware, antispyware, and so forth)
      18. Are you using proxy, vpn, ipfilters or similar software?
      19. Are you using Disk Image tools? (like daemon tools, alcohol 52% or 120%, virtual CloneDrive, roxio software)
      20. Are you currently under/overclocking? Are there overclocking software installed on your system?

    • System information log
      You should run only one of the following commands, the one you prefer.
      Read More:
      msinfo32 /nfo "c:\users\YourWinAccountFolder\desktop\MsInfo.nfo"
        msinfo32 /nfo "c:\users\%username%\desktop\MsInfo.nfo"
        msinfo32 /nfo "%userprofile%\desktop\MsInfo.nfo"
      (Then upload it here)

    • Retrieve System Information, using speccy
      1. Download Speccy portable - actual version 1.29.714 (click), unzip/decompress it and put it on your desktop.
      2. When the program opens, it will retrieve some information regarding your system.
      3. Once it's done, select the File menu and choose Publish snapshot. Answer Yes to the confirmation message.
      4. On the next screen that comes up, choose the Copy to Clipboard button and paste this link in your next reply.
      5. (Or attach the log here, if you prefer to not publish it for some reason)

    • Download and install the Windows Performance Toolkit on dev.windows.com - Windows Software Development Kit (SDK) for Windows 10 - sdksetup.exe 1.12MB (click) if you are using windows 10 or Download and install the Windows Performance Toolkit - Windows Assessment and Deployment Kit (Windows ADK) for Windows 8.1 Update - adksetup.exe 1.36MB (click)if you are using windows 8.1 (steps are almost identical...):
      Read More:
      Then open an elevated command prompt (right-click on the windows start button on bottom-left corner, left-click Command Prompt (Admin)) and launch these commands:
      Read More:
      You can also read the original tutorial/guide and its following posts for more informations:How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8) (click) (by Niemiro)
    Last edited by xilolee; 02-17-2017 at 06:16 AM.

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