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Using Reverb G2, constant dropped frames :(

RagingBeard

By RagingBeard,
in DiRT Rally 2.0 Support

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Go to solution Solved by PJTierney,

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Posted by PJTierney,

Hey again. I got word back on this and there's a few things at play here.   First, neither Windows Mixed Reality nor the HP Reverb G2 are officially supported by DiRT Rally 2.0, which means we're relying on however they plug into Steam VR's systems natively (in other words, there's no game code specific to WMR/G2 in the game, just Steam VR code). That being said, after some research we came across this thread which was posted just over a week ago. That comment directs to this

Microsoft is working with Valve to improve WMR performance on Steam.

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RagingBeard

RagingBeard 17

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I am getting an incredible number of dropped frames as shown in fpsVR. I can easily be on over 100 dropped frames in a minute or so.

This is even when running at a very low SS of 30% for example, and framerate stays at 90fps, GPU and CPU usage very low (3090 & 10900k). So to be clear, this isn't low framerate or reprojection etc, it is literally only "dropped frames".

Other sims run great, just something is causing an issue with DR2. I didn't have this problem with my Vive Pro.

Thanks.

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PJTierney

PJTierney 6,195

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23 hours ago, RagingBeard said:

this issue is only with G2, or specifically WMR most likely

The G2 has a larger per-eye resolution than many headsets so there may be something to this.

It could also like you said be something specific to WMR, but I haven't seen enough comments from others to prove either of these things 🤔

If I find out any info I'll let you know; I'm asking around.

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  • 2 weeks later...
Palladin82

Palladin82 0

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Hi, 

I tried practically everything:

- changed refresh rate of G2 into 60 Hertz  

- tested practically all settings on G2 WMR settings and Steam VR settings

60 hertz brought a little better performance but stuttering still exist. 

I have noticed that on FPSVR software I have constant drops on FPS (below 60 FPS) but on the graph there are no dropped frames observed + my GPU is only running on 40% of available power,

It really looks like a poor support for WMR headsets or Steam VR. 

It is really frustrating to not be able to play on my new G2. 

Not sure what I can improve in terms of hardware (i9-10900K / 64 GB RAM / RTX 3090/ Fast SSD) 

Best Regards

Greg

 

 

 

 

 

 

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Ialyrn

Ialyrn 388

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Turn off screen space reflections, set vehicle details to low, set crowds to low, turn off any multisampling, get rid of any supersampling (SteamVR will super sample automatically based on your PC's hardware, so you need to manually set Dirt Rally 2 to run at the correct per eye resolution).

These are the settings I found to cause the most issues in VR with Dirt Rally 2.0. Crowds are known to cause stuttering issues in Dirt games, setting them to "low" or turning them off stops this.

Screen space reflections will take a big chunk of the FPS

For some reason when vehicle details are set above "low" in VR, the cars light will cause the frame rate to stutter and drop; especially in area's with lots of trees. I found it to be the worst on Scotland, but can happen at any location.

On top of these things, you can also turn off the advanced lighting and camera effects that are all locatated at the bottom of the graphical options. These items can eat into the FPS also.

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LostOne84

LostOne84 0

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Hi,

I remember that I had to force disable DX12 in WMR for SteamVR because it is causing a regular stutter (about once per second for about a tenth of a second).

In case you haven't tried it might be worth a shot. It should be somewhere in the UI but in case you can't find it there you can also edit "YourSteamlocation"\steamapps\common\MixedRealityVRDriver\resources\settings\default.vrsettings

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  • 2 weeks later...
Jaggers271

Jaggers271 0

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Hi,

 

Similar issue here.  Intel i9-9900KS, NVidia MSI Suprim X 3090, MSI MEG Z390 ACE mobo, 32GB DDR-4000 C19 memory, 2TB EVO Plus NVMe SSD.  Using a relatively fresh install (2 days old) of Windows 10 Pro.  Previously used an HTC Vive (original) and had everything on Ultra, with no issues.

 

fpsVR Report:
App: DiRT Rally 2.0 HMD: HP Reverb Virtual Reality Headset G20 (90.001 Hz, IPD 61.7)
GPU: NVIDIA GeForce RTX 3090 (27.21.14.6140) CPU: Intel(R) Core(TM) i9-9900KS CPU @ 5.1GHz
Delivered fps: 89.15  Duration: 38.9min. Headset was active: 33%
GPU Frametimes:
Median: 5.4 ms
99th percentile: 6.6 ms
99.9th percentile: 7.1 ms
frametime <11.1ms(vsync): 100%
CPU frametime:
Median: 3.7 ms
99th percentile: 5.2 ms
99.9th percentile: 7.4 ms
frametime <11.1ms(vsync): 99.9%
Reprojection Ratio: 0.8% (for Index/Vive/VivePro headsets only)
Dropped frames: 691 or 0.3% (for Index/Vive/VivePro headsets only)
Max. SteamVR SS: 100%
Render resolution per eye: 3160x3088(by SteamVR settings, Max.) (HMD driver recommended: 3159x3089)

 

The Dirt2 Rally Steam VR graphics settings are at their lowest.  CPU usage averages 10% with a short peak of 45%.  GPU usage sits at about 62% with a short peak of about 76%.  It's all well within limits, I'm getting very nearly perfect 90fps indicated yet I regularly get stutters in game.  In game, fpsVR manifests these stutters as purple 'spikes' in its GPU frametime graph, and I see a stutter.  It happens regularly and is easily repeatable.  But the game sees 89.15 fps average with the longest frametimes at 7.1 and 7.4ms, which should be a complete non-issue and not noticeable, but fpsVR records 691 dropped frames after 40mins play.  In game though, it's like someone pressing pause for a tenth of a second, really throws off the immersion and is enough to cause accidents!

I'm using nVidia drivers 461.40 which to my understanding should have incorporated the VR stuttering hotfix driver 461.33.  Suggestions elsewhere have said this might be an issue with reprojection settings, but I'll try the DX12 fix mentioned above.  

Any suggestions welcome.

 

Frametimes # DiRT Rally 2.0 # HP Reverb Virtual Reality Headset G20 # 11_02_2021 09_27_46.png

GPU&CPU # DiRT Rally 2.0 # HP Reverb Virtual Reality Headset G20 # 11_02_2021 09_27_46.png

Edited by Jaggers271
Adding fpsVR screenshots.
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BozScaggs

BozScaggs 5

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Having the same issue here. 

Running an MSI 3090 Suprim X and 9700k. Everything was running smooth as glass on my Rift S in Oculus mode. As soon as I upgraded to the Reverb G2 I see intense stutters no matter the video settings. Plenty of headroom available. FPSvr and the SteamVR GPU monitor show many purple spikes corresponding with the stutters. Sometimes it will be smooth for about 10-20 seconds at the start of a race, but inevitably the stutters begin and make the game absolutely unplayable. Such a shame as this was one of my top 3 sims before.

 

I've tried all the fixes linked here and so many more. Reinstalled windows even. Tried multiple nvidia drivers. It has to be something not paying nice with steamvr or WMR. OpenComposite doesn't seem to work whether I try individual or global installation - it makes the game launch in 2D mode every time.

 

I remember hearing that CodeMasters stopped supporting the game so we may be out of luck and have to move on...

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Jaggers271

Jaggers271 0

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Just to add my findings, having tried hours of suggested solutions - I found that biggest improvement was when using the nVidia Studio Driver (461.40).  I think the issue is possibly driver related, but I've spent too much time already on this and, as has been mentioned, I think it might be time to move along to another sim as Codemasters are no longer working on it.  It's real shame, DR2 was by far my favourite driving game.  Onto PC2 or AAC perhaps.  

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Jaggers271

Jaggers271 0

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To add to the mix, it seems that WMR developers may have identified a performance bottleneck between SteamVR and WMR.  See the link below.

https://www.reddit.com/r/WindowsMR/comments/lmyusg/windows_mixed_reality_for_steamvr_updated_12536/gny2b6p?utm_source=share&amp;utm_medium=web2x&amp;context=3

Hopefully, things might improve when this issue gets sorted out.  Steam and Microsoft seem to be working on it.

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djbutcher13

djbutcher13 1

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Unfortunate seeing this. I am running my old Asus WMR with my 3090 (Reverb G2 should be here end of week) and seeing similar problems. 3090 has no problem running my low resolution headset, im only at about 75% usage at high settings but I get those frame drops. I hope it's  steam->wmr problem

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