Sound going out and game crashing because of it

It seems a small portion of the time the sound completely goes out on League, in all aspects, and the game winds up crashing because of it, including noting me as afk even if I am moving.

This has caused a few /remake votes because of it and I am starting to get worried as it has been happening a LOT more recently, and I do not want to be punished for "being afk" when I am in fact not, the sound just goes away.