One potential clue… a path tracer like iray never uses a prebaked ambient occlusion texture. Instead they calculate occlusion dynamically. It looks like that groove is very shallow, so it would not occlude light rays as dramatically as in your ao texture.
What does it look like in Unreal? Some difference is to be expected, unless you matched your lighting in Painter with the one in your preview scene in Unreal (could search for something like "substance painter unreal lighting"). In Unreal you have to ensure the textures are setup correctly: sRgb disabled for ORM map (or…
Hi everybody, first post here! This past month I've been trying to learn game props texturing, I think I'm at a good point, but some weird glitch on Substance Painter Iray renderer is driving me crazy. In the first screenshot, you can see how the model looks on the "Painting Mode", while the second screenshot is from the…