Frontier - sold 7Mbit down that actually operated at about 1.5mbit during business hours and would peak at 5mbit from 2a-4am if I had to download something - that despite the modem actually syncing up at 7mbit. It was entirely their network too, my SNR was good enough to do 25mbit+ if they had offered it.
Latency generally in the hundreds of ms because their network was so congested any traffic leaving it was a joke. Netflix was literally the only thing that worked for content (sometimes) and I'd assume that only worked through a combination of excellent bandwidth management on the part of Netflix and a caching server somewhere local on the Frontier network.
My dial-up in the 90s was better from a reliability and consistency perspective. I ended up having to install mosh on all of my systems because SSH sessions would timeout so frequently on Frontier's garbage network.
