VR unplayable with RX 6600 XT (Rift S)

[Thedoc_tv]

Hi, I've upgraded from a 1060 6gb to a RX 6600 XT, expecting mutch better performance, but I have been experiencing heavy judder even at >45 fpz, and I i try to use ASW to reduce this jutter there are very bad artifacts. Both the jutter and artifacts weren't there with the old GPU, what is the problem and what can I o to fix this, It's very demoralizing as I was happy to finally play in VR with better performance, but instead it's now unplayable even with the same settings.

[edmuss]

Try having a look through Ted's thread about running vr on AMD GPUs, granted it's for the 6900xt but some of the Radeon specifics might be applicable?

 

[Svsmokey]

Use custom graphics setting in Radeon software . Most importantly , set minimum clock speed to 100 less than maximum . Ramp up the maximum clock to whatever you're comfortable with . I run about 90% of max .

Under the performance tab , set power level to 9 . Adjust the fan curves for a more pre-emptive setting . (Unsure if fan is under graphics or performance tab) . 

Run a Radeon stress test , and increment max clock if you have the temperature headroom . 

[FractalQC]

I sold my 6800xt in favor of an 3080 for that exact reason. Thats sad because I could push a bit more frame with the 6800xt, but motion vector is broken on amd card, and this is totaly driver related. I guess that a 6900xt running native 60hz can be solid, but from my experience if you need to rely on motion vector, you are a bit screwed unfortunatly. Also the 10 series card are not updated for vr anymore so thats why you also get artifacts with your 1060, I had the same problem with my 1080. Oculus asw was spot on tho.

 

I hope Im wrong and that someone can fix it, but I messed a full 2 weeks and was not able to make it work, in any game, any scenario. Constant frame drop and crazy artifact with motion vector.

 

 

Edited February 7, 2022 by FractalQC

[Svsmokey]

Motion smoothing works well with AMD . Motion vector at this point in time does not . The only time i see less than 60 fps is on airfields and the supercarrier . This with fairly high DCS settings and Steam VR res at 100% .

[Thedoc_tv]

10 minutes ago, Svsmokey said:

Motion smoothing works well with AMD . Motion vector at this point in time does not . The only time i see less than 60 fps is on airfields and the supercarrier . This with fairly high DCS settings and Steam VR res at 100% .

But 100% SS looks <profanity> in the Rift S, it's only 1440p.

[Svsmokey]

Understood and agree . When i had the RiftS , i ran pd1.4 . When i ran it with my old 1070 , i couldn't get past 1.0 . I was responding to the previous "motion vector" post . Motion smoothing works seamlessly with AMD in my experience .

Again , raising minimum clock speed is key to smooth AMD performance .

 

Edited February 7, 2022 by Svsmokey

[Thedoc_tv]

I might try a clean reinstall of windows hoping to get some results, I have only 2gb left on my drive anyway

C/ drive, lol

[ricktoberfest]

23 hours ago, Thedoc_tv said:

Hi, I've upgraded from a 1060 6gb to a RX 6600 XT, expecting mutch better performance, but I have been experiencing heavy judder even at >45 fpz, and I i try to use ASW to reduce this jutter there are very bad artifacts. Both the jutter and artifacts weren't there with the old GPU, what is the problem and what can I o to fix this, It's very demoralizing as I was happy to finally play in VR with better performance, but instead it's now unplayable even with the same settings.

Haven’t seen anybody ask yet but what’s your cpu?  You might be bottlenecked by it or your ram. 

[Thedoc_tv]

4 minutes ago, ricktoberfest said:

Haven’t seen anybody ask yet but what’s your cpu?  You might be bottlenecked by it or your ram. 

I5 9600k and 16gb ddr4 3000Mhz, it could be a slight bottleneck, but this doesn't explain why the problem persists even at the same exact settings.

[ricktoberfest]

1 minute ago, Thedoc_tv said:

I5 9600k and 16gb ddr4 3000Mhz, it could be a slight bottleneck, but this doesn't explain why the problem persists even at the same exact settings.

No, I doubt that a bottleneck is the issue with those specs. 

[Thedoc_tv]

My best bet is that, as the card it's only 5 months old, drivers are not optimized yet for VR. If it's really like this, I hope they fix it soon.

[ricktoberfest]

15 minutes ago, Thedoc_tv said:

My best bet is that, as the card it's only 5 months old, drivers are not optimized yet for VR. If it's really like this, I hope they fix it soon.

You can try and lock it at 40FPS but leave ASW or reprojection off.  Sometimes the reprojection can cause more issues than it solves, but locking it at 40 might even out the spikes. 

[Svsmokey]

Have you increased minimum clock ?

1 hour ago, Thedoc_tv said:

My best bet is that, as the card it's only 5 months old, drivers are not optimized yet for VR. If it's really like this, I hope they fix it soon.

 

[Thedoc_tv]

I tested with some other games that had the same problem (Pavlov VR), the OTT performance hud showe fixed 80fps 2ms cpu and gpu time, but a lot of skipped frames, I think this is the issue causing the stuttering, how can I fix this? For NVidia cards should be the max pre-rendered frames option I think but there's non for AMD cards.

[cellinsky]

When I switched from Nvidia to amd, I forgot to delete shaders and fxo. After this was done. performance was way better...

[TED]

Make sure you have deleted absolutely all nvidia software and drivers. Use ddu or something similar. 

[Thedoc_tv]

15 hours ago, TED said:

Make sure you have deleted absolutely all nvidia software and drivers. Use ddu or something similar. 

I did and I also re-installed windows

[TED]

I wonder if there is some issue between oculus and amd? 

I am using reverb, wmr and have no problems at all using motion vector and motion smoothing with my amd card. These claims that motion vector is broken for amd are simply untrue. 

My only other thought is somehow u need to force dx11. In wmr this can be done pretty easily but not sure about oculus. You can check your default dx and or reinstall it from the bin folder in dcs. Check out thuds guide on doing this. Make sure for dcs you are bit allowing dx12 to creep in. This makes a big difference. 

[DeltaMike]

AMD works fine with oculus, I used to drive a rift s with a vega56.  Easy headset to drive.

Clean drivers, tune card, clear shader files.

Start tuning in sp, pick a mission. Free flight in Caucasus minimizes CPU and ram bottlenecks so that's where I'd start.

Textures high, vis range medium, shadows off, msaa off, civ traffic and grass off, trees medium, af 16x.  PD 1.0. Start there and adjust supersampling in ott, you won't get much so don't push it. ASW on. 

Don't fiddle with pd and ss at the same time, they do the same thing. PD gets out of hand quickly, leave that at 1 and see if you can get ss up to 110 or 120 in ott

Some of the above advice has to do with steamvr runtime, which is not relevant to oculus. I don't even know if you can use steamvr with oculus, but if you can, don't. 

Agree completely with svsmokey's recs. 

Also I agree, rift S doesn't look great with those settings but it's playable, which is more than we can say for msfs right.  

 

ETA: I looked it up, I guess you can use SVR.  Having used both, I'd say the oculus has the better runtime.  Fewer moving parts, much better user interface, fewer crashes and "window out of focus" issues, better motion reprojection (in some ways).... Generally harder to screw up. I'd still be using it if I could

Edited February 14, 2022 by DeltaMike