Help Needed with Unreal Engine 5.0.3 Artifacts Issue

We’re in a bit of a pickle here and could really use some help. Our game, built on Unreal Engine 5.0.3, has this pesky issue that’s been bugging us. Whenever we have point lights or emissive materials, there’s this weird noise that pops up around them. It’s creating some kind of thermal radiation effect on our foliage and widgets, and frankly, it’s driving us nuts! We’ve been banging our heads against the wall trying to figure out what’s causing it. We’ve tweaked settings, played around with everything we could think of, but no luck so far.

What we’ve tried so far:

  • Our FPS is consistently above 120, and shader complexity is excellent.
  • Created a new project, starting with a blank config file.
  • We upgraded to Unreal Engine 5.2, hoping for a magical fix, but alas, the glitch still persists and honestly looks worse.
  • We disabled mobile HDR to see if it would make any difference.
  • We’ve experimented with all available anti-aliasing methods.
  • We tried enabling and disabling separate translucency.
  • We duplicated the project and reset all settings to default.
  • Bloom is disabled.
  • We’re using UltraDynamic Sky. With or without it, the problem occurs.
  • Our VR headset is up to date.
  • We also tried to remove all plugins.

Same old, same old.

Got any ideas, hacks, or tricks up your sleeves to tackle this “noise” artifact? We’re all ears!

Thanks a ton.

EDIT: Here is a link to a cast showing the issue.

Do you mean this sort of thing, and it dances around?

It’s Lumen.

You might be able to streamline it a bit by tweaking the Lumen parameters in a PP volume, otherwise you have to turn it off, for now…

Thank you!

We decided not to go with Lumen for our project since it doesn’t work that well with VR. I have attached a link to a screencast showing what the issue is. It is noticeable around the lights and the surrounding areas.

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Must admit, I can’t see anything. It’s probably different when you’re wearing the headset :slight_smile:

I don’t think Lumen is a good fit with VR at the moment.

Oh yeah, for sure! Without the headset, you can barely notice it, and you won’t see it in the Editor either, unless you’re using UE 5.2. But once you’re in that version, even the map under the lamp gets all fuzzy and noisy.

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Does it decrease when you increase the scaling setting in graphics to 100%? I thought it was an artifact from the ai upscaling.