I encourage you to look at the roster while the game is loading. See if the roster team has a 4+ person fireteam. If so, go into the pause menu and see if you're about to be pubstomped. 
Then go into the menu and go into settings-> change character. 
Repeat until you find a balanced game instead of medical waste.
						
					
					
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	7 RepliesJust back out of the matchmaking. No need to change characters.