It's likely that their monitoring picks up issues with nodes and flags an outage and then clears it once the alarms on the nodes clear. Recently, that has been packetloss. So the extreme packetloss during the day flags the node as in an outage, then once everyone goes to bed and traffic on the node dies down, it auto clears the outage. An outage doesn't mean that techs are on site fixing anything unfortunately.
They do know what the issue is but they've instructed customer service to act like nothing is wrong, to continue to charge normal rates as most people won't notice since all they're doing is streaming Netflix. Gamers, streamers, VPN users, VOIP and video conferencing users are experiencing the same **.
The only fix is a node split and it takes months to get everything in order including construction permits from the city. So if your city is shut down then you're stuck for months. Best bet is to file with the FCC so someone who knows what they're talking about will call you and you can get discounts as well as a timeline on your node split.