I paid for their 110Mbps plan and have worked remotely for many years. Video dropping all the time, router hanging. After upgrading all my equipment because they wouldn't admit fault, I got a tech to come out who was completely candid because I showed him my modem SNR and power levels and he knew I wasn't messing around.
Without fail, he pointed to the pole top node and said that's the problem. It was Sunday and the realtime congestion was near 80%. He said it was scheduled for upgrade but everything is delayed because of supply chain issue in China.
That was all I needed to hear. Canceled that day, got AT&T copper (no fiber here), and it's been solid so far.