DCS VR: Black Stutters plus very frequent crashes.

[Blythee]

Firstly, I am writing this on behalf of a friend. There are four of us in our house who play DCS in VR, 2 of which have both just bought a PC and VR in order to play with us – we all have very similar builds.

One out of the four is experiencing extremely frequent stutters and then the game always crashes and requests that we forward a log.

 

The stuttering sounds exactly like this post; a lot of the comments advise turning down the water setting to low, we’ve done that and it still occurs. Typically, the game will crash within 5-30 seconds of entering an aircraft.

 

A ticket was raised to ED and they replied:

2019-01-24 22:08:51.886 ERROR DX11BACKEND: DX device removed. Reason: 0x887A0005 2019-01-24 22:08:51.889 ERROR DX11BACKEND: failed to create vertex buffer. Reason: DXGI_ERROR_DEVICE_REMOVED

It is a gpu driver crash Try to use a driver cleaner and do a clean install of the new driver

 

So far, I have done the following:

• Reinstalled DCS
  - Tried both Open Beta and the Stable version
  
• Reinstalled Oculus
  
• Reinstalled the following Nvidia Drivers
  - 417.71 and 417.35
  
• Re-seated his GPU
  
• Increase Page File to 32GB - stored on the M.2
  
• Throttled his GPU to 80% in MSI afterburner
  - We were able to play for longer than usual (2-3 mins) before the game finally crashed.
  - The stuttering was persistent throughout.
  
• Tried his VR headset on my PC; issue not present.
  
• Tried his GPU in my ‘second’ PC; issue still present.
  - This GPU was previously in my second PC about 5 days ago and it worked flawlessly
  - We moved the GPU into his new PC (after waiting for all his parts to arrive)
  - DCS worked flawlessly for about 36 hours and then this issue started.
  
• Used DDU to uninstall Nvidia drivers and then reinstall the latest driver (417.71)
  

 

Amazon is sending us a replacement GPU, I am hoping this will fix the regular crashing but I’m not sure whether it will fix the stuttering.

 

I’ve attached a copy of the logs and the mission file here, is anyone able to offer any further suggestions?

Edited January 26, 2019 by Blythee
PageFile edit. DDU attempt.

[Svsmokey]

Did you use DDU to remove old drivers ? Also , check pagefile settings ?

Edited January 25, 2019 by Svsmokey

[toutenglisse]

Saddly not…

 

But when anything changed on a pc (graphic wise), most of errors seen come from graphic driver.

 

Driver needs to be reinstalled clean, with delete of any previous driver data, according to new stuff.

Usually doing a driver install with "clean" option (every old data deleted previously to install) fix everything. If not, a DDU display driver uninstaller, run in windows safe mode, likely will.

[Blythee]

Thank you, guys.

 

I forgot to mention I've already boosted the Page File to 32GB; excessive I know, but at the moment he built the PC solely for DCS and he's got ample space on his M.2 - I'll reflect this is my original post.

 

I am yet to try 'properly' uninstalling the Graphics Driver using DDU, I'll try that to today and see if it has any effect?

 

What do you think the likelihood is of it being a faulty GPU? It was working flawlessly on both machines for a few days and then it appeared.

[Blythee]

So I used DDU to uninstall all Nvidia drivers and then reinstalled the latest driver (417.71) without GeForce Experience; the issue still persists.

 

In fact, now DCS won't load in VR at all, it crashes almost immediately on the loading screen. Latest log attached.

dcs.log.txt

[toutenglisse]

in your log :

 

2019-01-26 11:31:57.052 INFO DCS: gDescription: "Intel® UHD Graphics 630" gVendorId: 32902 gDeviceId: 16018 gMemory: 128 MB

 

your GPU is not recognize / you are plugged in motherboard's video port instead of GPU ?

 

2019-01-26 11:31:53.233 ERROR VISUALIZER: failed to create Oculus Rift swap texture set

2019-01-26 11:31:53.285 WARNING VISUALIZER: HMD device disabled by application

 

This regarding Rift error is probably linked to error above regarding GPU

[Svsmokey]

in your log :

 

2019-01-26 11:31:57.052 INFO DCS: gDescription: "Intel® UHD Graphics 630" gVendorId: 32902 gDeviceId: 16018 gMemory: 128 MB

 

your GPU is not recognize / you are plugged in motherboard's video port instead of GPU ?

 

2019-01-26 11:31:53.233 ERROR VISUALIZER: failed to create Oculus Rift swap texture set

2019-01-26 11:31:53.285 WARNING VISUALIZER: HMD device disabled by application

 

This regarding Rift error is probably linked to error above regarding GPU

 

Nice catch !

[Blythee]

Indeed. That boiled down to the fact he was unable to connect both his monitor (HDMI only) to his GPU (only 1 HDMI output, rest are DP) whilst the Rift was plugged in.

 

We just moved his PC up to my room and plugged the rift in via HDMI and my monitor in via DP. We also followed the steps suggested by an ED IT Tech to increase the TdrDelay to 15-30 seconds as noted here.

 

The game managed to load and we were able to get into a mission and sit in a jet for about 30 seconds before the game hung, after roughly 15 seconds the game crashed - the GPU did not recover during the TDR delay, instead it just waited to die :lol:

[Headwarp]

they make hdmi to dp vice versa adapters. On my old gpu the HDMI port didn't work. I had to find an active dp 1.2 to hdmi 2.0 adapter for my Odyssey. I had to specifically look for "active dp 1.2 to hdmi" as another DP to HDMI adapter limited my headset to 60fps.

 

was a 9 series card. 10 series or newer uses DP 1.4 I'm pretty sure. I think the active adapter was like $10 on amazon.

Edited January 27, 2019 by Headwarp