Weird effect on Lumen

Development Rendering
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ue4_Heightmaps - Unreal Editor 10-09-2023 19_34_15
ue4_Heightmaps - Unreal Editor 10-09-2023 19_34_151920×1029 116 KB

Howdy folks!

      Does anyone know why Lumen does this weird cloudy effects? And is there a fix for it? I know its not my system because I can just turn on raytracing and the lighting becomes fine again. This picture was me testing out a demo map just to make some changes to my snow material, cuz I was experimenting with Megascans textures (hence the video memory exhausted error-) I have an Asus TUF A15 equipped with Ryzen 9 and RTX 3060 6gb laptop GPU. Its a fairly decent system and it suits my needs, cuz I can actually make and run 8k heightmaps with near photorealistic visuals without any hassle. But every single time when Im trying to make a night scene, Lumen does this weird thing. For a while I was just switching back to screen space for the GI but Lumen is far more advanced and I'd love to use it. Again, Lumen's Hardware forced raytracing works wonders but the game im making, Im targeting for atleast a GTX 1650 as minimum and not a lot of people have RTX cards. Is there a way to fix this?

Thanks in advance!

Regards,
Cody

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If that lantern is your only light source, that would be the cause. Lumen can simulate emissive lighting, but small and bright objects are too noisy to resolve correctly, so analytical lights are needed. If there is an analytical light source present, then your scalability settings may be the question.

What specifically do you define as the artifact in this situation?

Also, can you attach a screenshot of your surface cache visualization?