patch 8.20/8.21? bug

So im not sure whats going on as of late, but the last patch (a 3mb one) seems to have destroyed my league clients reliability earlier i made a post that the client would lock up not allowing me to pick a champ or anything. while that isnt the problem anymore im getting the issue more ofter that the client crashes right after the game starts, usually between loading sreen and the 5 minute mark of a match.

i usually get the Fatal System Error message and have to restart my computer becuase league froze me full screen, despite Discord still working and everyone hearing me. has anyone else had the same problem lately? ive noticed alot more disconnects in the games i played this week mid match forcing us to remake or ff