So after I updated to 10.9 I noticed my computer took a bit more time to redraw certain sections of the screen. At first I thought it was Chrome, but I noticed it in Preview too :/ 2.3ghz 16gb ram 15" rMPB Graphics switching is turned off. any ideas? Here's a video, you can see what I'm talking about right at the 12 second mark. http://www.youtube.com/watch?v=zzjjkGB3SC8&feature=youtu.be Here's a picture (sorry for the quality): Thanks in advance!