Why Does Megavideo Lag When I Fullscreen It How Do You Fix Streaming Video Lag?

How do you fix streaming video lag? - why does megavideo lag when i fullscreen it

My videos always begin streaming time when they must maximize recovered after the minimization, but if I is full with time still left. This usually happens on YouTube and Hulu. Is there a way to resolve this problem, so that you can hear the videos in full screen mode? I'm sure there's a problem loading or a problem with the browser (IE and FF tried tons) and can not understand what it is.