I imported all my scene to engine, adjust lighting, add lightning etc, and after light building I have some problems with some objects. Ok, for some object i know what is problem (bad UV, or bad triangulation), but I have 2 problems that I dont know how to fix:
1.) I created hous wall from 2 objects, and now in UE4 I see on my wall where house is connected, why? Both sides of wall have same material, in 3ds I dont see this problem.
2.) On white pillow, I see black spots. Why? I checked normals, UV’s, I tried too many ways to work again on normals and UV’s, I tried to increase lightmap resolution, everything, but I dont know how to fix problem.
You can’t fix the lighting issue–separate objects are processed on different threads, which means there will be slight variations between them. The only way to avoid it completely is to make the surface a single object. You can improve the results but it won’t go away entirely: