Game's crashing every single game

It's happening since 2 days ago (6/13/2018). After the champ select ends, the game's crash so i need to reconnect, so when im playing the game, if i try to minimize LoL, it crash as well but no bugsplat at all. I uninstalled the game twice, tried repairs multiple times but still happenning. It's really annoying right now, help please! [cass-cry]