some unknown weird color & shadow error showing randomly

[ilumin8]

@;156337

Take a look at this thread:

"Does the artifact go away when you set the ‘r.Cache.LightingCacheDimension’ console variable to 128? There’s a bug with many (>1728) movable components right now that will cause this. Instanced foliage currently does not support lightmaps correctly which are used when the components have static mobility, so both routes are a bit broken. "

HI ,thank you for the quick reply,I will have a look on the thread!