LoL Internet Priority

Hey :) Is it possible to give LoL internet access more priority, because me and my family are all connected in one router. So whenever someone watch high quality videos, download something, my ping gets really high..The point is can i give LoL more priority, so i can play with 50 ping normally, meanwhile their download's and videos gets loading slower..If you know what i mean.. Thank you {{champion:44}}
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