so, I got somewhere with that sponge model and it looked fine in maya and mudbox.
However, on one edge I’m having this issue (circled in red) where there’s some kind of shadow, and it’s not appearing anywhere else. It looked fine in both apps and I only noticed this problem once ingame.
Any idea what could be causing this ? Could it not come from the UV and be a mistake from the model itself ? This sponge is only a subdivided cube with smoothing applied.