Object's edges vibrating when up close in VR headset.

Development Platform & Builds XR Development
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While using HMD the objects appear to be vibrating and have aliasing on the edges. Its running on Oculus Quest 2 with Oculus Link on PC. My specs are i7-11700K, 32GB DDR4 RAM and RTX3060 12GB. How do i avoid these jitters, I have tried almost everything i know, changing the anti-aliasing settings, improving performance, optimzed my blueprints. I cant really pin down whats the issue.

1 Like
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Hello Externlabs,

My first reaction is to tell you to set MSAA as your anti-aliasing method, but you mentioned that you already tried this.

It might be helpful if you were able to record a video of the vibrating edges. (I’m curious!)

Cheers, welcome to the forums.

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Sure, I will try recording it but its very difficult as phenomena only appears inside of VR headset, whereas the Desktop view is crisp clear

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Are you using forward rendering? You cannot use MSAA without that being enabled. It does sound like that may be your issue. Apols if you’ve tried that already.

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You can record inside the quest and send that

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How do i properly use anti-aliasing

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Set forward render and MSAA settings in Project Settings → Engine - Rendering
Good luck!

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Thanks a lot for replying, I will definitely try this.

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Well these settings are already enabled, I have tried different combinations of AA but still no luck, any method to Super Sample pixels in HMD?

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You can change the AA sample count be executing this command r.MSAACount 2 or 4 or 8.
I don’t know what else to suggest without more info/screenshot.

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I will post more info by tomorrow, will this work on Meta Quest 2 using Quest Link?

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Yes, it is for PCVR using the link. Native Quest uses the mobile renderer and has separate settings in Engine - Rendering → Mobile

13

Hi again,

Experiment with vr.pixeldensity for supersampling!

In the down-sampling direction Screenpercentage/Pixeldensity is a good magic bullet for helping performance. (Quest fixed foveated rendering basically is just lowering the pixeldensity at the corners of the view)

Cheers

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This is back from 2017, do they plan on improving it further in unreal engine 5? VR support in 4 and 5 is almost the same

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With UE5 there is now “Temporal Super Resolution” but I haven’t experimented with it in a VR context yet. Dynamic Resolution could be a good solution too. (Sharp rendering when performance allows?)

Without Nanite/Lumen UE4/5 for VR is very much the same. (Possible Nanite support for 5.1 though!)

Cheers