Some meshes I export from houdini into unreal have issues when Ray-Tracing is on; I’m getting bad shadow artifacts. What could the issues! Please see attachments. Any guidance in a direction to solve this will be very much appreciated.

System Specs:
RTX 3090
AMD Ryzen 3950x
64BG RAM

1) why do you compute weighted normals on import? get both normals and tangents
2) did you enable nanite? if yes - there's your answer

osong
1) why do you compute weighted normals on import? get both normals and tangents
2) did you enable nanite? if yes - there's your answer

Thanks a lot for this, really helped!