Been using the app for quite some time now, so I've used it enough to know.... Comcast/Xfinity should be embarrassed by this app... I'm using their app on their internet service and it is the worst at streaming of any streaming service I use. Watching sports it is very noticeable stuttering panning side to side, it often freezes for a few seconds, goes to a black screen, then comes back working. 100% better off using the networks app that is available because you have xfinity vs their app.