High latency and packet loss during the day, drops and normalizes at midnight
My gigabit xfinity sees ~100ms ping to google.com and up to 10-15% packet loss during working hours. At night this gradually reduces till about midnight when packet loss drops entirely and ping goes to <10ms. In the morning it climbs up again.
This is testing with a hardwired ethernet directly plugged into the XFI device. I have gigabit ethernet, and I'm in kirkland, WA (98033).
xfinity chat support have repeatedly tested and rebooted my modem and claim everything is fine. I've asked to escalate as it's clear there is congestion in my neighbourhood and they say they will "forward it on" but when I ask if / when I'll hear back or talk to to the next tier they refuse...