Yeah, I updated the ati drivers for the 4550, and CCC is now at v10.2. I also put an Asus mb in last night to replace the biostar mb. When I was setting it up, I noticed that windows 7 only enabled one of my cpu cores. So I think this was the problem the whole time. I downloaded a applet called BCD and now win 7 recognizes both cores. Now my blurays are playing at 50-60% for VC 1, and about 10-20% for MPEGS. Does that sound normal?