Thanks for your help! Unfortunately, I have tried those drivers. I still get the same problem. Here's another video: https://www.dropbox.com/s/f4r185yy7tfdf28/test3.mp4

I think I have the same problem! I tried to capture some video of it: https://dl.dropboxusercontent.com/u/39915924/test.mp4 https://dl.dropboxusercontent.com/u/39915924/test2.mp4 The problem isn't constant. It comes up most in battle and on the jump page. I am using Windows 7 on a brand new Macbook ...