Hi 3image, sorry it's not working well for you. Unfortunately that's a kind of unusual method you're using with combining keyboard shortcuts in some instances and SpaceMouse in other instances. I think it could get kind of complicated to have individual settings rather than a global setting for the navigation behavior so I'm sorry it's not likely to happen for v4.

Did you also experiment with setting the 3D view projection to parallel to see if that helps any?

- Michael