Understanding Instances & Draw Calls

With spheres it seems to work. Each gltf mesh with a different material is converted into primitives. Check the Inspector. So I believe that one mesh/one material x instances = 1 draw call. Maybe thats the reason. Maybe you could try to populate the scene with two spheres with different materials and check whether id doubles the draw calls.

Also check this if your are into instancing :vulcan_salute: