Biggest pet peeves when it comes to dungeon runs?

[Shurrikhan]

Don't know where you're pulling those numbers from, I can think of a certain place, but I've never had a run take 15-30 minutes longer just because the tank isn't multipulling.

But they do, very often, take 10 minutes longer, as per the difference between 20 and 30, as above.

30-20 = 10, not... your "two minutes", no?