Does anyone else have issues with broadcast channels freezing during live events (sports, debates)? I can't figure out how to actually talk to someone at Xfinity during a reasonable time frame as twitter response takes hours. And if you go through the "Assistant" they just want to refresh your box and that does nothing. If there is an NFL game on Fox and on the NFL Network my Fox channel will freeze and black out while the NFL Network will be fine. If I switch to straight antenna my picture is perfectly fine. Seems to be really hard to actually contact an employee as everything is automated.