None change nothing, absolutely nothing, but from @MostHost_LA what I understand, is that both textures and materials need a quality switch (no idea how to make it or…why make it), in order to modify those, whenever I change the scalability settings for texture and shader, right now If I set both to “low” all my textures and materials look exactly the same, I do not have any downgrade on reflections, opacity, tessellation, normals, nothing…
that’s why I never used any of those scalability settings, and thought they where just useless.