I've downloaded a few videos, 2 from 49ers.com and 1 from YouTube. When I try to play them, it opens in Xbox Video and fails miserably. The audio is fine, but video is very slow and far behind. When I use the "Play To" option and send it to my Samsung TV it plays just fine. It's also the same way when I stream the video from the website and play them in fullscreen. But they will stream okay in a small window. So the problem really is when its in fullscreen. What am I doing wrong?