I am a new Xfinity Instant TV customer and a longtime Xfinity Internet customer. My service includes Instant TV and On demand. I access my Xfinity TV service using the Xfinity Stream Beta App on my Roku Tv's. I am able to watch Live TV with no issues but when I play any On Demand Movie or TV show the screen freezes only after a few minutes of playback . The app closes suddenly and "Voila" it sends me back to my Roku TV Home Screen. Causing me to open the Xfinity Stream Beta App again and try to either resume the movie or show or start over the movie or show from the beginning. Both options still have the same disappointing outcome. Once again after watching a few minutes of the movie or show it again freezes, closes the Roku Xfinity Stream Beta App and returns to my Roku TV Home Screen. Its Deja Vu!! Please help me bring an end to this vicious cycle.