I found ST3 to be only slighter faster at file switching. ST2 was really fast until I got a retina MacBook Pro, at which point it got very, very slow. Hitting c

I found ST3 to be only slighter faster at file switching. ST2 was really fast until I got a retina MacBook Pro, at which point it got very, very slow. Hitting cmd+T and typing stuff is noticeably laggy, sometimes taking nearly a second between each file. With ST3 it's very laggy, but it's not nearly as bad as that.