Should we untick static batch when using GPU instancing

I would like to know if we use GPU instancing for objects like instantiated prefabs, should we untick static batch for them or disable static batching in that shader? Because I see a warning in the inspector, "You use GPU instancing and static batching at the same time"

By the way, I see some of them can be batched using GPU instancing in the frame debugger tool!
These objects have been instantiated. How can be batched statically? if they can not, why I see that warning

For example, I instantiated a prefab (it has two parts) seven times.
They can be batched by GPU instancing but like below
1+2+2+2
The max batch count is two.
The reason is that "Rendering different meshes or submeshes ..." even when they are batched, I can see that error
All instantiated objects have the same mesh, part 1 and part 2 (700 tri + 320 tri)

 

OK, the problem is about render order, solved.