Hi Luca I can't offer any suggestions but I am curious on what you mean by "ShadowBaking"? On our Reality Kit composer objects (.usdz) they don't currently have any cast shadows.
Did you find a solution to this in the shadow baking you mentioned?
Wittmason
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution