My artist sent me some FBX files that he exported from Blender. It’s a cylinder with a hole down the middle and a sloped top (I’ll refer to this FBX object as Cylinder.fbx from now on). I put one Cylinder.fbx down with the white material (that the cylinder is exported with), and a second Cylinder.fbx in a different place with a Chrome Ball material that comes with the Unreal 5 Starter Content. Whenever we run the game there’s a 50/50 chance that the materials will swap with each other (the one that should be white becomes chrome and vice versa). This is very strange to us because we do this same method of FBX import/export all the time, yet we’ve never had this strange issue before. We use UE5.0EA2 with Blender 3.00