Hi krass, it's looking great! For a high density file one thing that can help is to adjust the display mesh density to be looser so that you will have fewer triangles generated for the shaded display mesh.

To do that, go to Options > View > "Meshing parameters", and set "Mesh angle" to 25 degrees and uncheck "Add detail to inflections". That may help to speed up your display.

Also one of the new things for MoI v3 is that it can use multiple threads for the display engine to help speed up the display too.

- Michael