There is no excuse for a tank to be behind the DPS. If a DPS pulls, then clearly the tank needs to step it up. You set the pace, not the other way around. In fact, when grouped with others, there is never an excuse for anything less than immediate and continuous wall-to-wall pulls. Do not even bother to speak at the beginning of the dungeon. As soon as that barrier drops, your responsibility is to go. Period.
