It’s a big problem in apartment complexes where one line is CGNAT’d to every apartment. In practice that means 20 people share the same line that a house would have normally, and in the evenings every apartment streaming or gaming can make the speeds shit.

Sucks ass but in the US you can’t do shit because the speeds you pay for are “up to” and if they’re not “up to” that the best you can do is kick rocks.

This also usually coincides with you being able to only get one internet service provider at that apartment, despite that being illegal now. So you’re locked in to shit nighttime service with slow downloads and giga latency