So the Asset material changes with other materials in the Level at random when i start the level it also somehow depends on the position where i start.
I exported the Assets with the bug from Blender as an FBX and it dosent happen when i use OBJ instead for some reason.
I also didnt change any project settings and even reinstalled UE5 and started new projekt without any difference so far
I think these issues are related, then again I am not totally sure.
(EDIT) Nothing shows up in the logs from what I can gather, it also happens with Vulkan and DX12