Unreal Engine 5.3 VR with Lumen : Optimizing and Troubleshooting 

Sub 72 fps USED to be an issue. But Meta did something to separate tracking from rendering or something. Tracking is always smooth now, even with lower fps.

I'm gonna be coming back to this video a whole bunch.

This is a golden egg of a video, it's just solved so many issues I've been having

Really good videos, thanks for producing them :)

Great video. Helped me a lot with some performance issues i had with my project. Thank you Sir!

Finding someone who have some knowledge about this matter is like finding an unicorn. I would really appreciate it if you would create educational material, and talk about the status of nanite and lumen in vr. How you set up your projects, what machine you are using, and your thoughts about this two features on stand alone headsets. The apple m chips can support lumen and nanite natively, this can include the new iPhones as well. But what about android? There is so much uncertainty, and it’s been very frustrating. In my case, I have been dying to make my dream game for over two decades, and now that I’ve found the tools I need and I’m happy with, the learning curve is non existent because I don’t find places to learn what it’s needed since everything is so new, among other things.

Thanks

Bravo !

you are doing a good job

I can see a grainy shadow from the lumens in VR. at the same time, it is more in one eye, less in the other

Hello! I've been having issues exporting the file to use it on the glasses without having it connected to Unreal. I wanted to know if you could help me. They requested the project, but I don't have glasses to test it, and I need them to be able to use it without Unreal. When I try to package it, it gives me an unknown error.

Hi, thanks for your tutorial, can I ask for a link to your scene to play with it?

Hi I have an issue, Shadows are not visible in only the right eye in VR(Oculus). My unreal engine version is 5.3.2

Thank you, great video. Helped me understand several concepts. I also learned that GPU time doesn't seem to be a problem in my project. I'm getting FPS ~40-60 but it used to be 72 FPS on another level (with Lumen and all on RTX 3080). Stat unit Game times is ~18-20 ms and GPU is ~10-11 ms on a level I'm optimizing, so there is a good gap there, but I see some drops and the FPS doesn't go any higher. Looking at the ways to debug CPU and what else can be causing drops. I'd appreciate any advice or link in that direction. I do see some issues with physics when drops happen and at 72 FPS physics simulation was running smoother.

when i use anything other than scalability 3 it messes it up in the final build and i get visited by the void how can this be fixed ?

Does everyone have - Open XR packaging issues? I have Index HMD

Hi, I do not see a link to the project. Will the download still be possible?

The resolution in my Quest 3 is horrible when in headset. Any ideas what I can do to change that? I'm running a 4090 so I want it as crisp as possible when in game.

That's a great video, thanks a lot! I'm currently struggling with some stutter (preview is smooth, VR is jittery), can't wait to test if these settings help. Have you tried running it via SteamVR? It barely works for me, there's like half a frame per second, but runs smooth with the default oculus XR runtime

Does anyone else developing with a quest experience black screen smearing when turning your head? My Scene runs great on desktop but the moment i try with the headset i experience that issue

Hey geddan when I turn on instanced stereo in my project it instantly crashes after reopening. I am on 5.2 though, is this the problem? Other than that I followed the tutorials on your other channel. Any help would me much appreciated.

Hi! Im having a lot of issues trying to get a good quality in video rendering for archviz. Like flickering reflections and huge splotches and artifacts in GI... Have you any intention of making a tutorial about high end lighting and rendering for architecture? It sounds strange but there is a lack of REALLY good content about UE5 like you do. Thank you, regards.

Hello Geddan, nice video, Thanks for sharing your knowledge I appreciate that. I am a VR Developer and I have massive problems with my game since I switched from UE5.2.1 to UE5.3.1 my frame rate dropped down from 60fps to 60fps right after switching. I did not change anything in the project settings just converted to UE5.3.1 . I have a GTX3090 and also tested it on a 4090 with the same result. Do you know if this is a bug or if there is any chance to fix this issue?

I’m only able to achieve ~25fps on my Quest 3 and GTX 4090 on the UE VR demo using your settings and it feels pretty unusable. Laggy framerates and very noticeable black edges when I turn my head slowly. At pixel density 0.5 it’s pretty smooth. Have you noticed a difference between SteamVR and the Oculus App in terms of performance? I haven’t been able to connect using just the Oculus App.

how to make the shaking more stable?

Why don't you use Meta XR Plugins, simulator?

Where is the link of scene for free?

36 fps is not enough.. and the space wrap is only good for head movement.. in your testings you never physically move or even locomotion.. by just moving your head and using teleport movement you can't see how bad 36 fps with space wrap is and especially when you move from side to side. Honestly I don't think Lumen should be used in VR for the near future.. Nanite is much more important for VR then Lumen... you can just bake lights so unless your scene has dynamic lights or level objects moving then baked lights is just fine

ALL VR WHY SO PULSATING? OUR PERSPECTIVE IS NOT SUCH VIBRANT