Windows 8 and 8.1 Forums


Windows 8.1 High DPC Latency,(annoying static sound)-Help.

  1. #1


    Posts : 26
    Windows 8.1 Pro x64

    Windows 8.1 High DPCLatency,(annoying popping sound)-Help.


    Hello everybody.
    Before I start I just wanted to say , sorry for the bad english .
    So , I have read allot of forums lately , and I found out that windows 8 and windows 8.1 weakness is its latency.
    For me this proplem accoured like 2 months ago (before it didn't happend) , and yes I have messed around with the bios before that happend (now its all set to default )
    Currently I am running Windows 8.1 Update 1 (made a clean install yesterday) latest updates and drivers installed (with a program called DriverEasy) , and I am also running all the default settings in bios currently . I noticed the problem , 2 months ago just like I said before , when I was watching a video on youtube . Since that , I just can't watch some videos anymore with the ANNOYING static/crackling sound , its very annoying .And it also seems that it affects CPU performance and fps drops.Like I said before , I installed Windows 8.1 yesterday , so no minor tweaks have been done to the system .

    I have already tried :

    -"disabledynamictick" command
    -Disabling all unused devices in bios
    -Disabling EIST and C1E (no improvment at all)
    *-Disabling HPET Mode reduces latency , but pc isn't stable.

    Here are my computer specs (its a 4 year old and its really , really bad ):

    Gigabyte G41MT-S2PT(motherboard)
    -Intel Celeron E3400(processor)
    -Intel G41 Express Chipset(intergrated graphics card - really bad)
    -4Gb 1333Mhz Kingston DDR3 Memory(ram)
    -Windows 8.1 Update 1 (latest drivers and updates installed)

    Here are the screenshots of DPC Latency Checker and Latencymon :

    DPC Latency Checker (2minutes):

    Click image for larger version
    There are one or two yellow once a while .The values also slightly raise to yellows when I move the mouse , which I think is normal .

    Latencymon (2minutes-both pitcures):

    Click image for larger version
    The values were
    raising and falling



    Click image for larger version
    The values were
    raising until I stopped
    the checking .

    My power plan is set at High Performance (when the powerplan was set to Basic , I was getting red spikes in DPC Latency Checker) , and I am running the stock voltage in bios for the cpu 1.28750V.

    I realize this might be a hardware related problem , but I am little bit more sure that this is a Windows 8.1 problem hopefully they will fix it in the Update 2 .

    Help would really be appreciated.

    Every reply would be helpfull...

    -scarface0004

    P.S.Sorry for the bad english.

    EDIT:Today I noticed that the sound popped , when I started my computer at the windows logo.
    Last edited by scarface0004; 07 Aug 2014 at 04:22. Reason: Found out that HPET OFF reduces latency , but makes my pc unstable.

      My System SpecsSystem Spec

  2. #2


    Wynnum Australia
    Posts : 466
    Windows-10-Pro-Build-11099.rs1-x64


    Windows 8 Compatibility:[FONT=Arial] The DPC latency utility runs on Windows 8 but does not show correct values. The output suggests that the Windows 8 kernel performs badly and introduces a constant latency of one millisecond, which is not the case in practice. DPCs in the Windows 8 kernel behave identical to Windows 7. The utility produces incorrect results because the implementation of kernel timers has changed in Windows 8, which causes a side effect with the measuring algorithm used by the utility. Thesycon is working on a new version of the DPC latency utility and will make it available on this site as soon as it is finished.


    Source:
    http://www.thesycon.de/deu/latency_check.shtml]Click

    Beside that it's most likely a hardware / driver / codec - issue.

    Your system is also not really powerful as well.

    Windows 8 / 8.1 are not causing that kind of issues. There is only an input-lag, which can be fixed via M$-tool, when playing older games without direct-/raw-mouse-input.

      My System SpecsSystem Spec

  3. #3


    Posts : 26
    Windows 8.1 Pro x64




    Thanks for the reply!
    Like I mentioned before , this problem accoured like 2 months ago when I was watching a youtube video . Then I was also running Windows 8.1 and before then I didn't noticed the problem .It was running smooth , nice and dandy with no issues and no latency problem. Anyway as you can see from the 3rd picture , the problem is causing (I think so) "afd.sys". Is there anyway I can atleast reduce it , because the audio problem is really , REALLY annoying . I am sure that I am not the only one that is having this problem . I hope thats a Windows problem and it will be fixed in update 2 . Thanks anyway. Is there like a way to atleast decrease the latency?
    Last edited by scarface0004; 07 Aug 2014 at 04:12.
      My System SpecsSystem Spec

  4. #4


    Posts : 26
    Windows 8.1 Pro x64


    analivia belive me it isn't . Have you seen all 3 pics? The sound is popping when I watch a video on youtube . Its VERY annoying . Sometimes it also happen when I watch a movie on my computer . I really hope there is a fix in windows/bios for that ...
      My System SpecsSystem Spec

  5. #5


    Posts : 26
    Windows 8.1 Pro x64


    I enabled HPET in bios (because of performance issues) . Now the bars are yellow and the latency has increased. I have enabled it back , because of system instabillity.
      My System SpecsSystem Spec

  6. #6


    Wynnum Australia
    Posts : 466
    Windows-10-Pro-Build-11099.rs1-x64


    Quote Originally Posted by scarface0004 View Post


    Thanks for the reply!
    Like I mentioned before , this problem accoured like 2 months ago when I was watching a youtube video . Then I was also running Windows 8.1 and before then I didn't noticed the problem .It was running smooth , nice and dandy with no issues and no latency problem. Anyway as you can see from the 3rd picture , the problem is causing (I think so) "afd.sys". Is there anyway I can atleast reduce it , because the audio problem is really , REALLY annoying . I am sure that I am not the only one that is having this problem . I hope thats a Windows problem and it will be fixed in update 2 . Thanks anyway. Is there like a way to atleast decrease the latency?
    I have here beside my high-end-rig's an emergency Dell, which is based on really low spec's around a Q8200 and I just checked today my bosses cheap Office-Dell, which is newer then mine, but we bought it for AU$549,- around 8 month ago, because his really really old XP-Box finally died beyond to be able to be repaired, without spending even more money on it and as mentioned before, your problem is on all computers non-existent, therefore I believe that the problem should / must be related to your hardware / software-(combo). I even double-checked another cheap HP-Office-PC at work (AU$399,-) and again the problem didn't exist.

    Did you check your log-files via Event-Viewer ?

    Maybe we can pin-point something there.

    Another option would be to check your hardware via one of the following Tools-CD's/DVD's:

    - Hiren's BootCD
    - Ultimate Boot CD
    - MTDVD (my Upload) => Info: Click

    Just check step-by-step your hardware like:

    - Memory
    - Graphic's-Card
    - Hard-Drive's
    - CPU
    - etc.pp.

    Just post any findings and we can have a further look into it.

    EDIT:

    Also have a read here about HPET: Click

    I had 680's in SLI and now 780-Ti's in SLI and have no stutter- / lag-issues when gaming and I play BF4, as mentioned in that thread, as well. My wife's 2600k + GTX570-OC has no issues when gaming as well.

    Maybe it's Motherboard / Chipset / BIOS-related ? As you could read, there is no clear outcome in their test / findings.

    Last edited by TONSCHUH; 07 Aug 2014 at 06:16.
      My System SpecsSystem Spec

  7. #7


    Posts : 26
    Windows 8.1 Pro x64


    Thank you Tonshuh!
    I found out that I had some corrupted files on windows. I ran these commands:
    -sfc /scannow(found the corrupted files and fixed them)
    -Dism /Online /Cleanup-Image /RestoreHealth(It also fixed some things)
    Then I had to restart my computer.
    -I finally ran sfc /scannow again , and it didn't found anything , so I guess it fixed some files, but the latency is the same...

    Thanks for the programs will try them out , and report back.
    Oh, and can you please tell me how and what should I look at Event-Viewer?

    Thank you again.




      My System SpecsSystem Spec

  8. #8


    Wynnum Australia
    Posts : 466
    Windows-10-Pro-Build-11099.rs1-x64


    Quote Originally Posted by scarface0004 View Post
    Thank you Tonshuh!
    I found out that I had some corrupted files on windows. I ran these commands:
    -sfc /scannow(found the corrupted files and fixed them)
    -Dism /Online /Cleanup-Image /RestoreHealth(It also fixed some things)
    Then I had to restart my computer.
    -I finally ran sfc /scannow again , and it didn't found anything , so I guess it fixed some files, but the latency is the same...

    Thanks for the programs will try them out , and report back.
    Oh, and can you please tell me how and what should I look at Event-Viewer?

    Thank you again.
    Good to hear that you found something and could fix-it. That's a start.

    Look out for things like this ones here:



    You can google for the Event ID numbers, like "Event ID 50" etc. and then you will find some descriptions about it.

    Not every Warning / Error is something severe or a bad thing, like my 50's and 55's are related to my Drive "L:", which is my Sony MP-3-Player, which I charge via USB and which is not fully compatible with Windows-8.1, but that is not an issue for me.

    Another thing you could look at, would be packet-loss in your I-Net-Connection, via tracert or ping test's.

      My System SpecsSystem Spec

  9. #9


    Posts : 26
    Windows 8.1 Pro x64


    Forgot to ask you before , do you have HPET on in bios?
    And btw my friend also has a windows 8 installed on his machine and he said that he also has noticed the sound crackling/popping here and then . But then my other friend has Windows 8.1 and he said he didn't noticed it yet.

    P.S. Have you set a password for the .rar file you uploaded to mega upload ? If so could you please send me the password of the .rar file on personal messege?
      My System SpecsSystem Spec

  10. #10


    Posts : 26
    Windows 8.1 Pro x64


    Oh and Event Viewer has shown 2 errors (before the cleanup I mention before) . I think they are both Internet related :
    -The server {1B1F472E-3221-4826-97DB-2C2324D389AE} did not register with DCOM within the required timeout. EVENT ID :10010
    -The server {BF6C1E47-86EC-4194-9CE5-13C15DCB2001} did not register with DCOM within the required timeout. EVENT ID : 10010
    But like I said those showed up before the cleaning I did using CMD .
      My System SpecsSystem Spec

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Windows 8.1 High DPC Latency,(annoying static sound)-Help.
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