As others have said, probably best to just enforce at the router level…

Before anyone goes to war, it’s probably worth even clarifying if it’s true or not. I had a roommate convinced I was “hogging bandwidth” but our internet was just shitty. Over copper. Very inconsistent. I had to literally shut off everything i had to convince them it wasn’t even me.

They swore up and down it was me. There was a pattern. It was the only explanation.