Hi all, I recently upgraded my mac pro 1,1 from a X1900 to a flashed 1gb HD4870. While performance increase in bootcamp win 7 has been significant, it seems like it has degraded in OSX 10.6 compared to the old card. I've noticed slowdowns InDesign CS5, Civilization V and even scrolling performance in Chrome. I looked around for driver/firmware updates, but I haven't had any luck. Any ideas what might be causing this?