As a solo player whenever I get into a game with a 5 stack it almost always a terrible experience. They need to just stop allowing that number of people to queue together because no matter what happens they just blame the solo player. All of my worst overwatch experiences have been as a solo player with a 5 stack. There are many times as well where you can tell that 2-3 players on the 5 stack know that one of them is in the wrong and not you, but they never say shit, it's just 1 or 2 toxic assholes on the 5 stack trying to blame everything that goes wrong on the one person not part of their team.

Let people queue at 1, 2, 3, 4, or 6. 5 stacking if fucking moronic.