Hey guys, Quick question, Is there ANY lag and/or stuttering of any kind when browsing websites with a lot of photos/java/videos/gifs in the late 2013 rmbp 13" [let´s say, the middle configuration?] ^While also multitasking with other apps, lets say, chrome/safari with 10+ tabs, itunes playing, photoshop and word for example? I´m asking because many reviews have reported in previous 13 rmbp editions, that lag and stuttering is very apparent, given the fact of the weak graphics card. Now, since iris 5100 provides a boost on that area, is it still noticable? Like is scrolling on flickr or facebook silky smooth like, let´s say, a macbook air that doesn´t need the power for the retina? Thank you!