Around 1.30 of a game LoL freezes. I can still hear people on LoL chat (audio). But nothing works

Cant do anything about it. Cant even use task manager to shut down the game. I have to restart my computer. It happens every 2-3 games. Sometimes twice in a row, and sometimes i can play 5-6 games before it occurs. I have seen multiple posts with the same issue, has anyone found a soulotion?