Always willing to help Apple out with their beta tests. Already filed a bug report on this, just asking if anyone else is experiencing this. So I play League of Legends, probably an hour or 2 a day. On PB1, I got around 60-80 FPS on everything on "Very High", AKA the game maxed out. It was perfectly smooth, and 100% playable. Now, I got around 30-35 FPS and when I'm in more action packed fights it dips into the 20's. Of Course, I've already tired reinstalling the game. That fixed nothing, and I bootcamped to Windows 7 and the game ran just fine, 60 FPS, perfectly smooth. That just leaves it down to PB2 being the only variable. I haven't tired other games yet on DP2, but anyone who does gaming or wants to try out some gaming let me know the results!