I don't know how many if you have keep your video car drivers up-todate, but Civil 3D has the capabilities to do video card driver updates for you. If you go into your options dialog manager select the System tab. Then select check for updatse option. Civil 3D will link to the Autodesk database and search for updates for your video card and install them for you. I did this last year and I noticed a slightly better difference in performance. If you select View Tune Log and your will get all the information you could possibly want about you video card and drivers. You should check this out one day.