Related, to this day my Frontier connection black holes all my traffic a couple of hops inside their network if I do sustained line-rate UDP (WireGuard, for example) for more then three or four minutes. After some LinkedIn sleuthing I got in touch with their local NOC director who tells me it’s some piece of gear that hangs so bad he can’t remote into it and it stays down until the watchdog fires. Been that way for two years now.