Shadow Rendering Problem

[Clinker (Salih)]

Hello guys, I have a problem with shadows in UE5
Shadow looks very different consisting of thousands of dots everywhere. It looks bad, how can I fix it?
Thank you.

[Jason_Hoku]

In a quick reproduction I also get this grainy look to indirect shadows and haven’t found a way to soften them either:

I found this similar post and it seems to be pretty well known/discussed:

Noisy / Blotchy Shadows in UE5

Check this out. Helped me with a lot of shadow issues. Also try changing the mesh which the kitchen projects shadows on. Ive had a similar issue with some corrupted meshes and had to change it ( I still dont know how to fix it) [Unreal Engine 5 - Optimizing Lumen, Lumen Reflections and Troubleshooting Virtual Shadow Maps]

[Clinker (Salih)]

Hello Jason,
Firstly thank you for your reply!
I read the discussion you sent me about my question.
Unfortunately, none of them solved my problem.
I am going to try to figure out
Best,

[Clinker (Salih)]

I asked about the grainy shadow issue on Twitter and Daniel Wright who is working on lumen graphics in UE responded:

try ‘r.Lumen.ScreenProbeGather.StochasticInterpolation 0’
High scalability sets this to 1, which makes Lumen slightly faster but noisier. You can override in your game’s DefaultScalability.ini