[Client] Game Sound Randomly Stops Working and Frames Start Dropping

Just here to report a bug that I have noticed that the game does sometimes. Randomly, at the start of the game, the sound for my entire system stops working, and then League starts stuttering and dropping frames. The only way to resolve this is to restart the computer. I have no idea how to replicate this, and there is no indication of what causes this, although the two times it has happened I was playing Yasuo. This is quite frustrating and has caused me to lose both of those games, games where I was winning, but had to exit to restart my computer and ended up losing.