Ranked not working

I've found since patch 6.20 that my ranked doesn't work. I go to play a game of ranked I'm very lucky if it doesn't bug out so far. It just puts the timer on and never gives me a game no matter how long i wait. I try to leave queue to start again and it won't work the x button won't work. then if I do so manage to get past this part. whilst in champion select the timer will stick of someone and i will have to restart the client. Pvp.client thing fails left right and centre too