[SOLVED] Asus X570 Tuf high DPC latency. FIX: ran RAM at stock settings.

R

Reubenno

Member
Joined
Apr 18, 2020
Posts
22
Hello,


I have had DPC latency issues with my new PC since building it. My specs are as follows:

Ryzen 3700X
Asus X570 TUF
16GB Crucial Balistix LT 3200mhz
2X 500gb MX500
2X WD caviar blue 3tb
EVGA G2 750W PSU
Windows 10 pro 64bit 1909 (no option to roll back as this was the version I installed with).


What I have tried:
Running one ram stick
Changing GPU from my 970 to a 5700XT (this actually made it worse)
Reinstalling drivers, including older versions.
Running drivers in MSI mode
Disabling LAN and my audio devices
Unplugging my hard drives
Changing processor affinity to allocate different drivers to different cores.


It seems like disabling LAN in the bios and disabling my audio devices does help a little, but it's very sporadic.
I'm almost certain it isn't a bad PSU, as I wasn't having any issues when I was using it in my old build.
I'm also permanently connected to ExpressVPN, but after disconnecting and trying it doesn't seem to sort things.
The spikes are very random, I can watch Youtube videos without any issue, and I can often do heavy work in Adobe Audition without issues, but every so often it will spike and I'll get a jarring noise. This issue seems to get worse over time as I leave my PC on.
My temperatures are fine, CPU rarely breaks 60C, and the chipset and GPU sit at around 65C under stress.
I'm using the latest bios and chipset drivers.

The only thing I can think of is that using optical audio to my amp/dac is causing issues, but disabling my audio device didn't fix the issues.
I have attached my Latency Monitor report. Any help would be greately appreciated, I use my PC for audio related work and I'm going a bit mad.

Thanks very much.
 

Attachments

Last edited:
Huge ntoskrnl DPC latency spikes on video playback [Windows 10 1909]


Hello, over the past 4 months I've been having issues with DPC latency spikes and interrupts to process latency.
My PC specs are as follows:
Asus X570 Tuf [latest BIOS]
Ryzen 3700X
2x8GB Crucial Ballistix LT 3200mhz
GTX 970 [Using Nvidia 425.31 driver as it seems the most stable]
EVGA G2 750W
500GB SSD
5TB HDD.
Windows 10 64bit 1909 [10.0.18363]
USB Rode-NT Mic.


I will now follow the recommended information for troubleshooting such issues:

  • Self Built Custom PC
  • Desktop
  • No model number
  • Windows 10 1909
  • 64bit
  • Windows 10 1909
  • Retail Windows
  • Most is 4 months old, GPU is 5 years old
  • I have tried reinstalling the OS
  • CPU- 3700X
  • RAM - Crucial Ballistix LT 3200mhz 16GB (8GBx2)
  • Video Card- GTX 970
  • MotherBoard - Asus X570 Tuf
  • Power Supply - EVGA G2 750W
  • Is driver verifier enabled or disabled? Disabled
  • What security software are you using? (Firewall, antivirus, antimalware, antispyware, and so forth) Bitdefender but issue occurs on clean boot.
  • ExpressVPN is used
  • No disk image tools
  • Only DOCP is enabled for RAM, but issues occur without that enabled.
My Speccy- http://speccy.piriform.com/results/D5j3cJFNv01tPlhXToJtLUt
I have attached the other required files (.etl, DXdiag and msinfo32) in my comment.


They used to be a lot worse, but seem to have calmed down until my PC has been on for a while and I try to play a video though VLC and MPC-HC. Generally they are in check but after running teamspeak and having a YouTube stream in the background, I get huge spikes to 20,000 when trying to play video. Curiously, these go away after I've opened MPC-HC and begin to play the video. Unless I tab out and tab back into full screen video, then I get a big spike again.

So far I have tried:
Replacing my motherboard (for the same model again)
Fresh installing Windows (on a different SSD)
Updating my LAN and Audio drivers
Disabling HPET in Windows (My motherboard doesn't support disabling it in BIOS)
Uninstalling Bitdefender
Using Intelligent Standby Cleaner List
Using MSI tool to set my GPU drivers to MSI mode
Only running boot drive.

I think the issue becomes worse as I upgrade my GPU driver, it's very strange as I have no issues for around 3 hours but past that point (after running Teamspeak it seems) I get huge spikes.

My GPU isn't overclocked, I have tried multiple versions of Teamspeak.
When I run a Windows Analysis all I get are huge ntoskrnl.exe spikes, and when I expand them I get various details like "KiSystemServiceCopyEnd". Which isn't really helpful to me as I'm not particularly knowledgeable in this.


Any help would be really appreciated, I'm absolutely tearing my hair out at this point.

Thank you very much.
 
On crucial.com, I found BL2K8G32C16U4B/W/R (black, white, red) and BL2K8G32C16U4BL/WL/RL (black, white, red).
They are crucial ballistic, but aren't "ballistic sport lt".
And I can't find them in the MB QVL.
What's your exact ram model?

Then I saw you have an intel path in windows path variable, two intel environment variables, a bunch of intel drivers (maybe put there by windows) stopped, and intelpep.sys (Intel(R) Power Engine Plug-in Driver) enabled.

Before you modify your configuration and you'll follow my/our suggestions, make sure you have:
- a full system backup
- a fresh restore point
- your important files saved in a safe place
 
Hello, my exact ram model is BLS2K8G4D32AESCK.

I have a full backup, fresh restore point and multiple backups of files.

Just some new information, updating the audio drivers appears to have helped with the massive spikes, I'm getting the very occasional popping but nothing past that so far.

Thank you.
 
It isn't present in QVL: BLS2K8G4D32AES BK (BLACK) - BLS2K8G4D32AES CK (WHITE) -BLS2K8G4D32AES EK (RED).
Did you seat the modules inside 2nd and 4th slots (starting from CPU)? I.e., DIMM_A2 and DIMM_B2?
 
xilolee said:
It isn't present in QVL: BLS2K8G4D32AES BK (BLACK) - BLS2K8G4D32AES CK (WHITE) -BLS2K8G4D32AES EK (RED).
Did you seat the modules inside 2nd and 4th slots (starting from CPU)? I.e., DIMM_A2 and DIMM_B2?
Click to expand...
Yes they are seated correctly, I have tested for memory errors over a 24 hour period and had no issues.
 
xilolee said:
TechPowerUp Memtest64?
I didn't know them. :)
Please try these other two:
Test RAM with HCIDesign Memtest
Test RAM with PassMark MemTest86
Click to expand...
Thanks, I'll give them a run overnight and come back with the results.

Thanks again.

EDIT: I've just tested rolling back my audio drivers to an older version and the spikes are back, I reinstalled the newer ones and they're gone again. I'm beginning to think I've sorted this. I just wish realtek's audio drivers weren't such a pain to find online.
 
Also, see my first reply: latencymon showed bitdefender as culprit: I'd remove it altogether (at least whenever we are trying to fix this; then you can reinstall it after we hopefully fixed it).
 
xilolee said:
Also, see my first reply: latencymon showed bitdefender as culprit: I'd remove it altogether (at least whenever we are trying to fix this; then you can reinstall it after we hopefully fixed it).
Click to expand...
Hello, I have had Bitdefender uninstalled for quite some time now in trying to troubleshoot this issue. Thanks.
 
The spikes are back, huge ones up to 32,000. Showing Nvidia and ntoskrnl.exe as the culprits. The ram tests came back clean, running driver verifier did cause my overall DPC latency to spike up higher than I'm used to though. I suspect it's either a bad driver, or bad ram. But I don't know which.
 

Has Sysnative Forums helped you? Please consider donating to help us support the site!

Back
Top