Game freezes with the only option having to hard restart my computer

This happens maybe two or three times every day. I would be playing a game and it will suddenly freeze with the only thing im able to move is the mouse. I cannot alt tab i cannot escape, nothing. I have to hold the power button on my computer and restart it and join again only for this same thing to happen a few games later. I've tried looking for a solution everywhere but i still havent found a fix. This isnt because I have a bad computer, my computer is very good. This only happens with league and is costing me games to the point where im scared to queue up in ranked now. I've tried asking on reddit only for people to say 'this doesnt happen to me so not my problem' however it is affecting me and my games, RIOT PLS HALP

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