new client broken, cant play another game after a game

after i finished game, play, collection loot those buttons at top disappeared, it comes back after restart, but i cant play again right after a game

league client also bugsplats a lot after i alt tab while in loading screen

half of the time, i play game with no sound, sounds from other sources that isn't league is working, like league client, videos and music, but sound for game itself is not working

thanks for reading