(I noticed this thread after posting: Visual Defects on Imported Models - Rendering - Unreal Engine Forums )
Apologies.
We are seeing visual defects in materials applied to some imported .fbx models when rendered in UE4 4.4. These materials render perfectly in both Modo and Maya.
This occurs with both Planar and “automatic” UV Mapping. It occurs with both “substances” and Materials based on .png textures.
Here is an example circular model with a grid material and the defect is visually obvious:
Here are the files we used:
[link text][2]
BTW, we are using only dynamic lighting so we don’t have a 2nd UV map for lighting.