Well, a normal map is supposed to sort of displace a material so it doesn’t look flat, right? So when you apply it to two different materials, shouldn’t they be displaced by the same factor? In other words, how can the paint appear to be above the metal if they have been equally displaced by the normal map?
Or maybe you used the gizmo_scratches texture (that you used to mix the metal and paint shaders) to generate a normal map with appropriate displacement values where the metal would appear?
