Hi there. I just downloaded Civilisation 5 from steam (for Mac OS X) and I noticed that even though the game's running on a nearly top-notch iMac (2.8 GHz i7 processor, ATI HD 4850 4GB RAM etc.) I still can't select maximum quality for leaders in the graphics menu while I can set everything else to "High" (by the way, is "High" the highest setting?). Is Civ 5 running in some kind of emulator or was the code written from scratch? In either case, has anyone else experienced the same issue, and if yes, does anyone know wether Aspyr is going to release a patch addressing this and any other potential issue in the near future? I thank you all in advance.