If used in the best way. This software creates a camera in the Layer Manager with every movement of the 3D Mouse. This causes the Layer Manager to redraw. The more objects - the worse it is. I find covering it up with another window helps. Too much of this makes Max crash - not the covering of the Later Manager, the redraw this software creates.
If used in the suggested way, just as dangerous, because after creating a Viewport Camera for it to use does alleviate the redraw, but then applies the movement of this Camera to the Undo.
Makes me think it could be a video driver, though this happens regardless.
It would be wonderful for this to work. It seems it is a doomed situation either way.