Ever since I upgraded to Revit Arch '08, my 3D view has slowed down to a crawl. I'm running a nVidia Quadro FX4500 video card that worked fine in Revit 9.1. While in the 3D view, if I hover my mouse pointer over an object, it takes at least 15-30 seconds for it to lite up red, and another 15-30 seconds before I can edit. When I first rotate the view in 3D, it runs smooth, then it stops to a crawl. It seems like the machine is waiting for the video card to catch-up. Do I need an Autodesk Revit Arch '08 approved video card with updated drivers?