Every time I've launched a quickmatch since beta 7 it goes to a black screen and then won't start. Each match I try and initiate ends up like that and then it kicks me back to the main menu after staring at a black screen for about 1 minute. 

I have only been successful once in getting quickmatch to launch. 

Also worth noting that when you wait for a quickmatch for awhile and then quit out to the menu (if nobody shows up) it still says "match available" even though you were the only one there. It thinks there is someone available to play. I've gone back in a couple times just to wait again before I realized what was happening.