Weird Lumen artifacts in shadows

[bensharpeee]

Hi Guys

Does anyone know what cause these weird artifacts in the shadows? Or even better if they know of a solution?

Thanks

[SupportiveEntity]

Hey there @bensharpeee! Lumen will have varying levels of artifacting depending on a huge number of factors. Does changing your AA from TSAA to any other option reduce it?

This thread goes over some fixes but more focused on renders:

UE5.0 flickering shadow (lumen?)

[flickering shadows 180822] https://vimeo.com/oviantales/download/741366208/1971e73821 Hello everyone I tried to resolve this problem for an entire week and I even if I found some tracks and clues on the web, I could not be able to resolve this shadow flikering issue. Any idea ? Every light in the scene is movable. I tried to enable Distance Field Shadows on every lights, enter r.Lumen.Reflections.HierarchicalScreenTraces.MaxIterations 4, I also switched from Virtual Shadow Ma…