It is their problem to fix, CCAndrews. It's rampant problem specifically in the South Denver metro area. The data flow is great then completely stops. 175+mbps down to zero to back up. I've been speed testing and screen grabbing results for weeks. Tried to add those images, not sure they are uploading, but they show on 3/27/20 @ 5:11:00, 5:11:26, 5:11:51 a fluctuation from 116mbps to no connection to 125mbps. This happens all day long, regardless of time (load on network). Xfinity repeated says 'restart modem" / "looks good" / they've even sent multiple technicians to fix (before pandemic). It's only gotten worse with the increased load. I've also got screen grabs showing their network status as "down" but the internet services as "all good." And then, after finally talking to a CSR I ran into attitude (kind of like your responce to this first post). He told me everything was fine then outage began showing for 4 days starting that afternoon. I agreee. Fix it! (pardon typos)
I've been a Comcast/Xfinity customer in four states, I even worked for them (not in the internet biz) and I've never experienced this level of problems. I've been working on this issue, politely, for over eight months - it's so bad, it's in the news here - and these experts here just can't seem to solve the problem. Xfinity has even removed it's CEO garranty letter (used to be posted on Help page). I can't even seem to find a direct link to "contact us" anymore - all auto responses. Fingers crossed they fix it - the community is in need of connection reliability during these hard time of work-from-home and home schooling.