Do your UVs on the meshes seem normal? Here’s a video from an older issue I helped with, let me know if your textures also react as the ones in the video do: - YouTube
It was a texture for landscape but it is the effect I am trying to get a grasp on that you are seeing so the video should suffice for a demo without me needing to make a new one to upload…let me know, the reactions are around the 10 second mark and you’ll see as the camera moves they go crazy…is that the same effect you are seeing?