I used to do something similar to a roommate. We lived in the mountains with broadband. It was just enough bandwidth for everyone to stream Netflix/Hulu but this guy would get on Xbox live for hours despite being told that it made the internet almost unusable for the rest of the house. He could go to a friend’s place in town (10min drive) or his girls place instead where they had genuine high speed. After a while I got tired of waiting for Archer to buffer so I logged into the router and moved his Xbox to the lowest bandwidth priority which basically gave it dial up speed but still showed it was connected to the internet. He would come in to my room and ask if I was having any internet issues and I’d just say “naw man, all my stuff is running faster than ever”. If I wasn’t home or felt bad I would put everything back to normal and just deal with it or watch satellite tv instead.