At first, import some FBX file and drag it to Level.
When click instanced mesh, Details window works with material lists.
And go straight to Project Settings > Rendering and change some options like Nanite that restarts the editor.
I can find compiling the shaders at splash screen and also loading material popup at right-bottom side of opened editor.
Last I click some Skeletal Mesh in Level, somehow Details window starts show and hide all material lists and editor freeze almost infinite times.
I don’t have any clue except industrial mesh(with bunch of materials) with 5.4 version.
Is there recommended material counts per mesh usage?
Why it happens and how can I fix it?