Custom, most things on highest setting, some things off that are stupid (like motion blur, I mean, turning your head irl doesn't make everything blur, as you're already focused on wherever you're going to look when turning it, if you just stare straight ahead and turn your head around really fast maybe, but normally when you turn, you turn to look at something specific, and your eyes are already on it, making no motion blur).
Was also pretty pissed you have to actually enable the game to take advantage of multiple cores, I mean, seriously?