Anyone swapped their xfinity provided modems for the CAX80 from netgear?

In an attempt to cut back on fees that seemed to be unnecessary. I checked the app to see what modems were compatible with xfinity. There were a few options to choose from, but the CAX80 seem to be the best option for me and it. Also had recommended in parentheses. My internet signal has never been stronger I love it. The problem is I can only watch my cable shows via the DVR Because I work a lot. Originally I had the xp5 wi-fi box an  coax cable x1 box. Instantly I was experiencing connection problems and was told that I needed to only have WI. Fi boxes and after 2 techs and many days of troubleshooting, it was told to me I. Needed the xp6. I still continue to have intermittent service and connection. But my wi fi cable boxes have all the bars. There have also been two different texts that came on two different days to address an issue from the line connect to the powrrlines. Still having problems with my cable about six times or more an the hour. Tomorrow I'm supposed to have another Tech. Come over who hopefully can do something else. Maybe update the cable wires coming from my box an coming into my unit.... I'm so frustrated at this point. It seems as though i'm going to have to let xfinity go. Does anyone know what to do