Shimmering....

[markturner1960]

So I am super pleased with my Quest pro set up now, getting great image clarity and performance, however, I have one annoying issue...At mid to long distance ( not up close, there its super clear!) I get quite noticeable shimmering around the edges of things. 

Now this was not always the case, I think it has manifested somewhere along the way during my tuning of settings. I list my current settings below: 

In Oculus home: Set resolution to 1 ( 3936 x 1984) This for me gave the best combination of frame rates and graphics quality, along with the other settings below

In OTT I have supersampling at 1.4, ASW on auto, in the quest link section encode resolution 3905, bitrate 0 dynamic bitrate & sharpening enabled, max dynamic 750

In ODT, I have FOV tangent multiplier at 0.8; 0.8  All other settings as default.

In DCS, PD is 1, MSAA x2, Shadows medium, clouds high, textures high, vis range high, Anisotropic x16, terrain shadows off, No lense effects or heat blur,

I set my GPU to 1770 mhz & 825 amps in MSI afterburner as above. In OpenXR perf tools, I have foveated rendering on set quality wide and the post processing for the sunglasses feature. Everything else off.

 

What do you guys find has the most effect on firstly causing the shimmering and secondly getting rid of it? 

[Mk1_Trebuchet]

No experience with the oculus settings, but what you are describing sounds like aliasing.  I use the G2, and setting AA lower than 4x introduces the kind of aberration you're describing.  (perhaps look into Anti-aliasing settings?)

[markturner1960]

Thanks and yeah, I tried that before I posted as it seemed the obvious culprit, however, I always ran at 2x before and had no issues, running x4 does not seem to affect it. i was wondering if it was something to do with how the sharpening worked ? 

[markturner1960]

OK, in the middle of a laboriuos process to try and pin down the cause, during which I have noticed something strange. I am using the supercarrier as a test, as it has lots of wires, cables etc that "shimmer" or show the sharpness well. 

Can anyone tell me whats going on here? I noticed with my head vertical, I get more noticeable jagginess on horizontal lines and edges. if I tilt my head 45 degrees left or right, it looks better! 

 

Edited June 7, 2023 by markturner1960

[Glide]

Sorry, I can't recall which GPU you have, but if you are on Nvidia, try setting Negative LOD Bias to Clamp in the control panel. 

Edited June 7, 2023 by Glide

[markturner1960]

Nvidia 3090 , That actually helped fairly significantly...thank you! 

I would still be interested to hear from someone who knows about how the sharpening applied in both OTT and OpenXr performance tools works and its effects on what we see 

 

Cheers.

 

[prestonflying]

Bump, HP G2 with 3080 and also struggling with shimmering on straight objects like power lines, distance buildings, etc. Ill look into Negative LOD Bias as well

[markturner1960]

It helped, but did not eradicate

[MHAce75]

once again this forum is proving helpful. I didn't know what LOD negative bias was and why it was recommended CLAMP. I had set it to Allow, and then noticed excessive shimmering, but I didn't connect the dots... until this post... 

well, to my experience shimmering can never be eradicated in DCS VR, can only be minimized with the setting above, high PD, MSAA 4x and clouds Ultra, which in this combination needs a very strong rig... even then, still some shimmering (aliasing)

[markturner1960]

So what do people ( preferably Quest pro users with similar set up) think of the sharpening options found within OpenXR performance tools? 

Do they help at all? 

What type do you use? NIS, CAS etc) 

What percentage ? 

What performance hit is there ? 

Something in my settings has introduced a very fine but noticeable grainy effect, which I am pretty sure was there when i first started...It's not terrible, but i would like to understand how all these options work and what their effects are.

Another query related to to this is FXAA & Anti aliasing transparency in NVCP.....Useful? or not? And why for either answer......

 

Thanks! 

[Dentedend10]

Hi, I’m having the same issue with shimmering. Also on Quest Pro. I was hoping the QPro would be high enough resolution to get rid of that. Set LOD to Clamp. 
I wonder if this is current VR / headset resolution limitation? For instance do Varjo users have shimmering?

also, in Nvidia control panel, anyone played around with DSR (dynamic super resolution) settings? Would that help?

[edmuss]

Not strictly related as now I have an aero, all shimmering is gone....

However, when using the G2, anything much below 2600 wide resolution with MSAA x2 would shimmer. Upscaling will introduce more shimmer and MSAA will help to quell it.

[slughead]

On 6/7/2023 at 9:40 AM, markturner1960 said:

In Oculus home: Set resolution to 1 ( 3936 x 1984) This for me gave the best combination of frame rates and graphics quality, along with the other settings below

In OTT I have supersampling at 1.4

Leave the supersampling at default and just set the render resolution in the Oculus app. Then you know what resolution the app (DCS) is actually rendering at. We don't know how the two interact or whether one overrides the other. I find 4704x2384 gives me the optimum resolution/sharpness.

MSAAx4 gives a big improvement over x2 for shimmering. If you run at that, your problems may be gone.

[markturner1960]

ok, will try thanks

 

[5ephir0th]

On 6/8/2023 at 10:09 PM, Dentedend10 said:

Hi, I’m having the same issue with shimmering. Also on Quest Pro. I was hoping the QPro would be high enough resolution to get rid of that. Set LOD to Clamp. 
I wonder if this is current VR / headset resolution limitation? For instance do Varjo users have shimmering?

also, in Nvidia control panel, anyone played around with DSR (dynamic super resolution) settings? Would that help?

Its not a headset per se limitation, its just low resolution, the only way you can fix that is going high (very high) on supersampling.

Antialising technices are made for this, the problem is the one on DCS its an old not very efective technique but ED is working on implementing new methods

Edited June 10, 2023 by 5ephir0th