I see you don’t have the normal map applied, in this post (on a thread about the same performance issue), the suggested solution is to disconnect the normal map. I deduce the tangents required for normal mapping being recalculated per frame are the culprit here. As far as I can tell, BGE and UPBGE 0.2 do not update the tangents in game, this makes the normals look off or even inverted when the mesh deforms, but I understand it was a sacrifice for performance’s sake.
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