El Paso, TX
I'll second that. I don't know if it's my ISP or if it's YouTube (i think it's my ISP, Telmex) but YouTube is pretty much unusable on weekdays during the day.
I know it's not any sort of network congestion because as soon as i turn on my VPN the problem magically goes away and i can load 1080p videos with no issues. With the VPN off i'll be lucky if i can load 360p videos during the day.
Ever since i started using fiber i noticed that Telmex uses traffic shaping in a lot of ways. Like for instance if i try to send files to pretty much ANY ISP that isn't Telmex the speed will be heavily throttled (and i mean HEAVILY). But if try sending a file to any popular ISP with the VPN turned on the speed is back to normal.
I don't think they get the point of what "upgrading" means.
I should point out, that when i was on DSL Telmex didn't use traffic shaping at all.