Not sure if it's a bug or what, but when I am in the tutorial area (where you create your character and answer questions to determine character type) the game is buttery smooth on my 2 4 year old iMac. It also seems to let me run on most of the highest video settings. However, the moment I enter the world after the tutorial the game goes down to about 1 FPS. I tried entering the world as both a ranger and a mage so that I'd start out at different places and the result is the same. I also tried setting the video to the lowest settings -- it helps a little, but still close to only 1 FPS. The only time the frame rate goes back to normal is if I'm looking down at the ground. Anyone else on Mac have this problem? Any other info I can provide?