I downloaded a video file that is an HD Rip of a movie from Palladia HD. The video clocks in at about 2 hours and is 12 gigs. Basically VLC will play the audio no problem. But the video lags and skips and is unwatchable. I am running a latte 2009 unibody macbook 2ghz with 2gb of ram. I just purchased a seagate momentus xt and 4 gigs of ram from amazon and will upgrade my laptop when the package arrives. But will either of these fix the problem? or is it my processor?