I understand your frustration personally. I can't stand speed runs, because either I'm healing or the friend I'm always running dungeons with is healing. It's not fun for either of us when we feel the stress of "if we don't kill these things, we wipe", it's something neither of us like. But at the same time we do want things running at a good pace. Good pace being 1-2 groups are grabbed, they're burned down, then we continue. None of this "let's pull everything between the bosses, surely nothing can go wrong!" idiocy I see from a lot of tanks. Considering you seem to be leaning at 1-2 groups, you're perfectly fine IMO.