The game runs generally perfect for me when everything is on High, though it is slightly laggy depending on the area I'm in when the shadows are set on high. I currently prefer having it set on the Medium preset though, just to ensure I get a really smooth experience. Here's my setup: Macbook Pro, 15", late 2011 model with OSX Lion preinstalled. 8 gigs of ram but I only have 32-bit Windows 7 The problems I am noticing are load times though – both when transitioning between new areas (eg. when going to new planets, flashpoints, etc.) and when exiting the game or taking any action where the game window is NOT in focus. If I have the game up and want to open start menu/open a Chrome window/anything, there's a noticeable amont of delay in opening the new window and switch to it from the game. If I'm exiting the game, I have to wait what feels like forever for it to actually close – sometimes I get tired of waiting and just ctrl+alt+delete the process... I'm not sure if that's because of the game or because I'm on 32-bit windows... I asked some native Windows PC friends if the loading times between places are long for them too and they said yes, but I don't know if we're suffering the same amount of "slow"...