Analog-X64 - 07 October 2012 02:41 PM
I dont own a Mac, but this happens on a Windows machine when the resource of the computer are maxed and it is unable to re-draw the window back on the screen.
Can you reduce the priority on the render window and see if does this?
Well I have really payed with anything yet been busy but One would think brand new 12 core MAC pro with 64 gigs ram and a 1 gig card could handle anything