I've read anand's review and am very concerned by what. He said about the Ji performance given the high resolutions of this notebook. I don't play games or do anything graphics intensive (some very light photoshop at most). But the one thing that I do care about is lag. I just can't stand lag when scrolling web pages or moving windows around. I do a lot of multitasking, upwards of 70 tabs open across a number of browser windows, a few word/pages doc, etc. Wll I see UI lag on a 2.6ghz 16gb rMBP?