League of legends Computer Freeze

So for 2-3 months I had the problem that my computer freezes while playing League which happened RARELY like once a month. Recently it became more frequently, and since this week it happens EVERY game at about 2-3 minutes. I don't know what to do about it, i updated graphic drivers, my pc isn't too hot, reinstalled lol 2-3 times... I'm so lost :(
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