X1 box quits while watching

Almost every day trying to watch a Peacock TV show it quits during the show, "something went wrong". DUH!  Checked wi-fi with the phone and it's working fine, all pods on with strong signals (the tv is in the bedroom 10 feet from a "strong" pod).  However, sometimes when I go to the Xfinity app I have to turn off wi-fi to get it to load on cellular and then often it says everything is working properly but sometimes the app says "cannot test the device".  Other times the app locks up with a blank white screen and I have to turn the phone off and back on.  So the question is, do I have a bad X1 box or a bad gateway or is the system just buggy and I should forget it?