DPC Latency Issue.. I'm at wits end

E

erase1h

New member
Joined
Apr 29, 2016
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2
Hi, I'm posting in hopes of finding a fix for this as I just built a new computer and am getting high DPC Latency which is causing audio to stutter and have a static sound to it which is extremely annoying. I've tried everything.. Reinstalled windows, tried disabling all devices but none of them seem to be the cause as it didn't fix it.

Here are some screenshots of my latency;

dpclatency.PNG

I also downloaded the Windows Performance Toolkit to try and pinpoint what was causing it, here are some results using xperf;

shit.jpg

I'm not 100% sure what this means but I assume it has something to do with dxgkrnl.sys and nvlddmkm.sys. I'd appreciate any sort of help I can get with this issue as I just want to have my new build running perfectly, thanks. :)
 
Hi erase1h ... and welcome to the forums ...

Hard to tell much from the graphs. If you have an Nvidia video card and a Realtek audio chip, we have seen a lot of latency trouble with the those two, possibly conflicting with each other. Not a lot of success finding cures... Another forum visitor with the issue found that when they uninstalled the Nvidia drivers, the issue stopped ... but would reappear once the Nvidia drivers were reinstalled. Problem is that the Nvidia drivers are necessary to provide the high-quality video experience desired. That particular visitor found relief by returning to Windows 7 (the drivers do not seem to conflict in Windows 7).

If you are still having the issues, see about posting a trace, and perhaps try the SysNative info collecting app (which can provide clues for advanced troubleshooting)... The app & instructions are available here at our SysNative BSOD forum thread (you can post the results here in this forum, since you aren't experiencing BSODs) https://www.sysnative.com/forums/bs...windows-10-8-1-8-7-vista-post303.html#post303

If you make use of Driver Verifier, remember to turn it off after testing with it. It can be a source of latencies and BSODs because it is rather a "stress-test" sort of tool.

Oh... and uninstall your current version of Latency Monitor. It looks to be an older version not particularly compatible with Windows 10. Download and install the latest version (6.50 or newer) ... things were updated for better results in Windows 10.

In the meantime, you can always try uninstalling your Nvidia driver, and reinstalling the latest version, using the "custom" option and the "clean install" option. This has helped a little for some systems.

Best of luck
 
OldGrayGary said:
Hi erase1h ... and welcome to the forums ...

Hard to tell much from the graphs. If you have an Nvidia video card and a Realtek audio chip, we have seen a lot of latency trouble with the those two, possibly conflicting with each other. Not a lot of success finding cures... Another forum visitor with the issue found that when they uninstalled the Nvidia drivers, the issue stopped ... but would reappear once the Nvidia drivers were reinstalled. Problem is that the Nvidia drivers are necessary to provide the high-quality video experience desired. That particular visitor found relief by returning to Windows 7 (the drivers do not seem to conflict in Windows 7).

If you are still having the issues, see about posting a trace, and perhaps try the SysNative info collecting app (which can provide clues for advanced troubleshooting)... The app & instructions are available here at our SysNative BSOD forum thread (you can post the results here in this forum, since you aren't experiencing BSODs) https://www.sysnative.com/forums/bs...windows-10-8-1-8-7-vista-post303.html#post303

If you make use of Driver Verifier, remember to turn it off after testing with it. It can be a source of latencies and BSODs because it is rather a "stress-test" sort of tool.

Oh... and uninstall your current version of Latency Monitor. It looks to be an older version not particularly compatible with Windows 10. Download and install the latest version (6.50 or newer) ... things were updated for better results in Windows 10.

In the meantime, you can always try uninstalling your Nvidia driver, and reinstalling the latest version, using the "custom" option and the "clean install" option. This has helped a little for some systems.

Best of luck
Click to expand...

Thanks for the reply, It actually fixed itself after 2 days of trying to fix it.. haha. Sorry for not marking the thread as solved and wasting your time, I really do appreciate your reply though!
 
I was just about to post my own thread! I have NVLKDDM.sys and dxgkrnl.sys high IR/DPC latency errors and I do have a Realtek chip +Nvidia card and Windows 10. I have also heard that the only way to fix this is install Win 7? I also have USB disconnects, not sure if that's related. Or do i need to make a new thread ?

OldGrayGary said:
Hi erase1h ... and welcome to the forums ...

Hard to tell much from the graphs. If you have an Nvidia video card and a Realtek audio chip, we have seen a lot of latency trouble with the those two, possibly conflicting with each other. Not a lot of success finding cures... Another forum visitor with the issue found that when they uninstalled the Nvidia drivers, the issue stopped ... but would reappear once the Nvidia drivers were reinstalled. Problem is that the Nvidia drivers are necessary to provide the high-quality video experience desired. That particular visitor found relief by returning to Windows 7 (the drivers do not seem to conflict in Windows 7).

If you are still having the issues, see about posting a trace, and perhaps try the SysNative info collecting app (which can provide clues for advanced troubleshooting)... The app & instructions are available here at our SysNative BSOD forum thread (you can post the results here in this forum, since you aren't experiencing BSODs) https://www.sysnative.com/forums/bs...windows-10-8-1-8-7-vista-post303.html#post303

If you make use of Driver Verifier, remember to turn it off after testing with it. It can be a source of latencies and BSODs because it is rather a "stress-test" sort of tool.

Oh... and uninstall your current version of Latency Monitor. It looks to be an older version not particularly compatible with Windows 10. Download and install the latest version (6.50 or newer) ... things were updated for better results in Windows 10.

In the meantime, you can always try uninstalling your Nvidia driver, and reinstalling the latest version, using the "custom" option and the "clean install" option. This has helped a little for some systems.

Best of luck
Click to expand...
 
Hi DanzoMeteor ... and welcome to the forums ...

Can you start a new thread for your computer? (Since our visitors & techs receive email notifications of posts, it's best not to bother the previous visitor whose thread is resolved) ... Thanks!

In that new thread, if you'd like, tell whether the PC started with an earlier version of Windows or not, and perhaps try the SysNative info collecting app (& possibly run the Performance Monitor health check), and post those results in your new thread. Run a few diagnostics, too, just to rule out coincidental hardware issues. Here's the link to the SysNative info collecting app & instructions (though since you aren't having a BSOD issue, but a latency issue, you'll post the results in this forum - in your new thread)
https://www.sysnative.com/forums/bs...windows-10-8-1-8-7-vista-post303.html#post303
 
ok will do that, thanks!
Edit: that is for BSOD. I have not received any BSOD, so i can just post my thread in the windows 10 forum area?
 

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