Hi 3image, can you describe in more detail what is strange? I'll need more information in order to try and do anything about it.

- Michael

Hello Michael, well, the difference in movements is just to complicated to explain (at least for me). I can only suggest that you try it yourself. Get a SpaceMouse (maybe a cheap used one, they are very robust) and Fusion360 or Meshmixer and try navigating against MoI. Total difference! Actually, I think the implementation of 3D mouse controls is very well done in Autodesk products, that's the reason I recommended these products.

Hi 3image, well one big difference is that by default MoI keeps your "up" direction towards the world z axis so that you don't get turned upside down.

You can change this in MoI under Options > View > Rotate/Pan/Zoom options > "Rotation style". Set it to Rotation style: "Free rotation" and see if that behaves better for you.

- Michael