I just got YTTV about 3 weeks ago. I got a roku ultra for xmas, and have stuttering video with it. Doing some research, evidently they updated a while ago, and lots of people are complaining about it. I went back to just using my T.V's app for now as the Roku is unwatchable. I'll probably just return the Roku, as it seems to have been happening for a while with no fix according to a few internet forums.