bug in lol

since the patch 8.20 I had a bug in the first minutes of the fight or outside it freeze the league of legends and then does not respond correctly I have to turn off the PC to try to solve it because it is the only thing that lets me do and it is slow and also damages my pc to be making that use and had queues of 20 minutes in various situations and repaired, uninstalled sought help also write this in the forum to ask you invoker and you also happen to you? It will be my PC or it will be the game I hope to be able to play once more with you and be able to say gg wp.