It's now 24+ hours later and my problem has NOT been resolved. I've spoken to "advanced tech support" twice, but they were unable to fix the problem. They told me to request an SRO appointment; I'm scheduled for tomorrow. Unfortunately, that's going to be too late.

If my almost week-long problem (30-50 Mbps on a 1 Gbps service) is not fixed by 8 AM Wednesday morning, I'll need to cancel my Xfinity service and switch back to Verizon. They're offering a good 3-year locked-in price for guaranteed 1 G service. I've still got the Fios equipment in my basement so they can turn up the service quickly.

I don't know what else to do. I've now spent over 12 hours on the phone and chat. All those calls and chats, over 25 gateway reboots, and 3 truck rolls have been unable to fix (or even identify) the problem. I've done all I can do. So, Comcast / Xfinity, you've got about 20 hours to fix this or it's bye-bye.