I had a similar problem. When I would rotate, it would lurch and jerk and then disappear off the screen. I found that the Hair was killing my machine.

Turn the visibility, in the properties, off. Turn it on when you need it.

Also, try setting your tracking to either fast or box. Although I don't think this worked for me. I had to remove the hair.

I had to uninstall it from my work machine, I just could not use it there. To bad, I actually have more time at work, then at home. LOL

I believe the problem is the video card. As with the video card we use at work, it is a card designed for CADD work, Hardware OGL, not software.

This may be what is going on with your machine, then again, it may not.

This works fine for me on my machine at home.