Dunno if this is a repost btw, i searched if this was posted but didnt find anything.
This is very simple: invite a friend into party, let him queue as tank, you just queue as dps or healer w/e your role isthen enter the instance, and let your friend leave. Now accept when it says "Someone left your group, want to find another player? blablabla" and a new tank will join almost instantly. So basically you get a group way faster.
Maybe you can't really call this an exploit, but it's useful anyway![]()