OK I've done some more extensive testing now, and the only problem I encountered was the occassional crash when switching viewports between smooth shaded and wireframe. If the viewport setting was left on either one or the other then Vue was perfectly stable for hours. Even with the instant draw settings turned up to max, most of the demo pics I tried were still acceptably fast for panning and rotating in the 3D view. So on balance, I'll live with the shaded -> wireframe problem in return for the speed and responsiveness of the view. - Mark

Mark