Hi Sven, also if you're going to be working with heavy models it's a good idea to adjust some display settings in MoI.

Go to Options > View > Meshing parameters and change the "Mesh angle" setting to a rougher angle like 25 or 30 degrees instead of the default 10 degrees, and uncheck "Add details to inflections".

That will make for a slightly rougher looking shaded display but it will also considerably reduce the density of the display mesh and will help make complex models perform better.

- Michael