I just got a new rMBP (with dedicated video-card) and as a test I decided to run Diablo III: Reaper of Souls on Ultra settings. It looks absolutely gorgeous but its 10-17 fps frame-rate is very disappointing.
Are there any settings I can adjust to improve this performance? In Windows it can be "tuned" to max performance or battery saving; is there a similar setting in OS X?
Right now it's on AC power (plugged on the wall), Activity Monitor is reporting that the video-card is being used for D3, is there anything else that I'm forgetting to check?