Hi folks, I'm searching for people who works with Xcode in a MBPr since I'm at college and I work a lot with Xcode and scrolling through the code in fullscreen this thing ****ing lags! This is normal? How can this be possible? Intel HD4000 CAN drive text at 2880x1800 smoothly and I know what I'm talking about. PS: The diferences between HD4000 and GT650M scrolling in Xcode are MINIMAL, so what is goin' on? Driver issue must be!