I just bought a brand new 2014 MBPr, installed Yosemite off the bat, and straight off, there's some definite lag in certain animations such as going into Expose/Spaces etc. I feel like I've ****ed the laptop already, or it's more likely a bug. I was wondering what you guys do to prevent bad **** happening to your laptop down the line. I remember on my old MBP 2011, it was recommended to turn off Automatic Graphics Switching and what not, but, yeah. edit: oh, and sometimes the text in the menu bar disappears in dark mode for some reason.