Unfortunately my external Bootcamp install has messed itself up somehow and all games ran terribly on it, like a stop motion video, so I won't be able to play Alien: Isolation. 🙁
Currently, I'm trying to game on OSX until Windows 10 hits to avoid installing Windows every quarter lol. My "gaming" Mac is the iMac 5K with m295x, surprisingly games do look crisper at 1440p in OSX compared to Windows, even if the output is still 1440p. There's some Retina magic working there. Though I guess I'll need to change a lot of settings, any chance someone would share their settings on 1440p for Cities Skylines, KSP, and Witcher 2? I used to be able to max everything in Cities Skylines under Windows, but on OSX it ran "almost" smooth. As for Witcher 2 it doesn't seem to remember my custom graphic settings.