Hi mir4ea - that would definitely speed up rotation but it would have a negative side effect of a sort of "popping" of the visual appearance changing quite a bit every time you did a view manipulation. That's kind of abrupt feeling is something that I've tried to avoid up until now.

Also there are a lot of times that the view needs to be redrawn totally separate from rotation, panning, and zooming, like when you're moving the mouse over objects for selection. So also because of that I've tried more to focus on performance improvements that work with the whole display turned on rather than selectively turning things off only during some operations.

- Michael