I have the Fios symmetrical gigabit connection. The connection is very stable and test good most of the time over 800Mbit. However, sometimes the upload is limited down to 100Mbit for no reason.
The only solution I have is to randomly reboot both the Router and the ONT.
This isn't the IPV6 Intel thing, this isn't a "time of day" thing. It only happens when something power-cycles with a power outage or update that causes the upload to be very slow until I start rebooting devices to fix it.
Router CR1000A
ONT Alcatel
Any insight would be most welcome, thanks.