It's real bad. I'm rank 44, and am definitely not good at the game, but it's frustrating as hell to be matched with the following:
-A team comp of Hanzo/Bastion/Torb/?/Reaper. I chose Lucio and asked if anyone could switch to tank, but the only response was "go fuck yourself."
-Two insta-lock Torbjorn on offense. One of them switched... to a sniper.
-Leavers. Way too many. Even when we have a good chance of winning, if there's a setback, someone is probably going to leave.
-Hanzo.
-A very strong match that ended with two teammates picking Torbjorn and Symmetra on sudden death offense. They both refused to switch, and we never made it to the point.
This is more or less my first FPS, so my win % was in the 30s when I started. I am much better at the game now, but I have no idea how to crawl out of this queue :|