Help with DPC Latency

[jbonnett]

Hi All,
Not sure if I posted this to the right place...
My sound is lagging everytime the graphics card is under load e.g. everytime I play a game the sound slows down and distorts.

I've done a couple of tests... (Sorry about the shots being taken with a camera, my print screen button doesn't work).

DPC test:

Latencymon test:

As you can see the highest latency drivers are the "Nvidia Kernel Mode Driver" and "DirectX Graphics Kernel".

I've already tried different graphics drivers, the latest one and audio drivers. Reinstalling Windows.

My specs:
OS: Windows 10
Processor: i7 5960X
RAM: Corsair Dominator Platinum 2 x 8gb @ 3000Mhz
Motherboard: Asus Rampage V Extreme
SSD: Toshiba Q Series 128gb
HD: Seagate 2tb @ 7500rpm
Graphics Card: MSI 780 OC Twin Frozr III

The only other hardware I have is Corsair H100i, HX1000i and a light strip connected to the Corsair commander.

I have no idea how to fix this problem, any ideas.

 

[Zoot]

When I run LatencyMon on the system in my signature, I'm told that the Nvidia driver is the worst offender too, but my latency values are nowhere near yours. I wonder whether this happens on AMD cards or not?

I know it's not much good to you, but do you have a different graphics card you could try?

 

[SieB]

I had problems with latency recently, although nothing as bad as what you are getting. My problems were mainly with video playback and internet streams.

For me it was Nvidia Geforce experience causing it, after uninstalling it my problems went away. The streaming service that Geforce experience uses is always running even if you are not recording or streaming to a shield device. It also has a performance hit on games, only a small one of 5-10% but it is there.

Anyway, not sure if it is what is causing your problems, but if you have Geforce experience installed try uninstalling it and see if it helps.

 

[SPS]

I've had SATA drivers cause high latency for me..
The only way I was able to solve it was to literally go through device manager uninstalling drivers until the latency came down..

 

[jbonnett]

I find that if I close Chrome, Corsair Link and Geforce experience, my latency goes back down, although when I start a game the Nvidia and DirectX latency sky rockets again... I have tried disabling all the drivers for devices as I can (no need to uninstall that driver), but with no luck

I've tried my old 470 and I don't get the sound problem, the Nvidia driver is still high but the DirectX one went way down. Any ideas?

 

[SPS]

I find that if I close Chrome, Corsair Link and Geforce experience, my latency goes back down, although when I start a game the Nvidia and DirectX latency sky rockets again... I have tried disabling all the drivers for devices as I can (no need to uninstall that driver), but with no luck

I've tried my old 470 and I don't get the sound problem, the Nvidia driver is still high but the DirectX one went way down. Any ideas?

If you reinstall the nvidia driver but only install the graphics driver, i.e. uncheck the 3D drivers and HD Audio, does it solve it?

 

[jbonnett]

If you reinstall the nvidia driver but only install the graphics driver, i.e. uncheck the 3D drivers and HD Audio, does it solve it?

Already have, I followed this:

Download DDU
Install
run it
Enter Safe mode
Uninstall all the NVIDIA software and Drivers
Reboot.
Download the 347.88 driver
Run it
Select CUSTOM Install
Uncheck EVERYTHING except PhysX <-----Important
Check the CLEAN INSTALL box
Finish install
Reboot

 

[SPS]

Hmm. Try removing all non-vital hardware and retry?

 

[jbonnett]

Hmm. Try removing all non-vital hardware and retry?

Already done that too

 

[SPS]

Can only suggest trying a PCI-E sound card or external DAC to see if it solves the issue.

 

[jbonnett]

Can only suggest trying a PCI-E sound card or external DAC to see if it solves the issue.

The onboard sound works fine, it's just the sound via the 780 that's the problem

 

[SPS]

The onboard sound works fine, it's just the sound via the 780 that's the problem

Oh... So it's just HDMI? Use onboard out only then?

 

[jbonnett]

Oh... So it's just HDMI? Use onboard out only then?

That's not fixing the latency issues though...

 

[SPS]

That's not fixing the latency issues though...

Well presumably the card is faulty if on board works fine and you've tried reinstalling drivers..

 

[jbonnett]

Well presumably the card is faulty if on board works fine and you've tried reinstalling drivers..

But I've already mentioned that I still get high DPC with the other graphics card... It's the high DPC latency that's the cause here... It's just finding the culprit of the latency, which seems to be a tough task.

 

[SPS]

But I've already mentioned that I still get high DPC with the other graphics card... It's the high DPC latency that's the cause here... It's just finding the culprit of the latency, which seems to be a tough task.

I've tried my old 470 and I don't get the sound problem, the Nvidia driver is still high but the DirectX one went way down. Any ideas?

You said you don't get the issue.

 

[jbonnett]

You said you don't get the issue.

Different graphics cards use different resources. I'm just trying the graphics card in another machine now... I also mentioned that I still get high latency, although I get less on the DirectX sides of things...

 

[jbonnett]

Nope no problems on another machine...

 

[Legacy-ZA]

Have you measured it with the program called "LatencyMon"? DPCLAT gives inaccurate results with Windows 8/10 at times.

As you might know, DPC latency is usually caused by a driver going bonkers, what I would suggest you do is; Go to your windows startup, disable all all startup items, see if it improves, if it did, re-enable them, one by one.

Usually the big offenders are:

Monitoring software, like Netword Card utilities / Motherboard monitoring utilities for overclocking and tuning and last but not least, USB / chipset drivers. Make sure all your drivers are up to date.

 

[jbonnett]

Have you measured it with the program called "LatencyMon"? DPCLAT gives inaccurate results with Windows 8/10 at times.

As you might know, DPC latency is usually caused by a driver going bonkers, what I would suggest you do is; Go to your windows startup, disable all all startup items, see if it improves, if it did, re-enable them, one by one.

Usually the big offenders are:

Monitoring software, like Netword Card utilities / Motherboard monitoring utilities for overclocking and tuning and last but not least, USB / chipset drivers. Make sure all your drivers are up to date.

The latest release of LatencyMon has apparently fixed them issues, already disabled the startup items I found my latency goes down if the Corsair Link, Geforce experience, Chrome notification software... Although when I start a game the latency goes way up again, all my drivers are up to date... Even tried rolling back some to see if there was change with no luck... as far as I can tell it's specifically to do with the DirectX and Nvidia drivers.