LoL client and select bugs

So, we were 4 people in the match lobby for blind pick summoners rift. We went in Queue and it was draft pick and one of us 4 was left in the lobby, didn't even got in the Queue and for him, we were still in the lobby with him. The game before, we all disconnected, enemies and our allies. Then the game was just gone. The last few days I'm having problems with the client. Ingame everything works fine and I don't have any lags. (Only lags when the game shuts down for everyone).