Trash

First. When these outages occur are they being officially indicated here with any info about them ?;

https://www.xfinity.com/support/status 

Use a cell phone internet service, a public WiFi hotspot, or a neighbor's internet if you need to in order to check it.

Or you can use the Xfinity App: https://www.xfinity.com/apps 

Second. As a test, does a computer / device that is hardwired directly to the router / gateway device with an ethernet cable have the same problem ?

With this test, we are trying to isolate this down to being either a WiFi-only problem or a problem with the general connection to the Comcast system which would of course affect both. It's a good first step in troubleshooting before proceeding any further. 

Hello user_6e5kkx, an intermittent connection issue like that would have by running up the walls, so I can only imagine what you've been going through. I'd love a chance to help get this figured out and work with you more. I would like to make sure we test the full scope of this. Are you able to try a connection with an ethernet directly connected to your modem or gateway? If so, do you experience the same intermittency? 

@XfinityMarcos 

Golly gee..... That sounds familiar..... 🙄 My posts must be invisible....

@user_6e5kkx 

Did you get a chance to try that test ?