Is there a way to limit bandwidth on a certain devise or intentionally slow the internet?

[Josh]

So my brother has become obsessed with some game called league of legends. So much that he burnt up his laptop so he bought a desktop. Then he got a gaming monitor. He would watch tournaments whenever they were on but now I'm witnessing on a regular basis, 4 YouTube league of legends videos on while playing it and streaming league on twitch all at the same time. Now we live in an area where we can only get 5 mbs so its a problem trying to use any internet whatsoever. He uses all of the bandwidth and you cannot do anything as long as he is awake. Not even an exageration. I go reset the router and you can hear him scream and curse the instant I reset. So what can I do. Can I slow his internet speed to an unbearable level. I don't want to go as far as cutting his ethernet but I am starting to consider it

[Quackadoodledoo]

no but you can set parameters to control when he gets wireless signal from the router.