"Definitely one advances faster in smaller games, but I find that trolls (players doing extremely inefficient strategies and not changing play style when suggested) in small games are much worse than large games. I sometimes feel advancing is dependent on choosing when NOT to play because they are too many trolls around to get a consistent outcome."
Exactly, I strongly believe some games are literally impossible to win, if you have a teammate doing one of those strategies. Not only does it not help, but it makes it significantly harder to win, and if the other team doesn't have a player like that and doesn't make any massive mistakes, the game is literally unwinnable.