As always, I have no idea how anyone is doing a SSB run in 2 - 3 minutes including the boss???? I do this boosting killing the first 5 elites, basically first two rooms, that alone takes about 3 - 4 minutes with a group of level 86 toons. BUT I have done this for a team all the way to 89 and Dread Waste quests to 90 due to it is constant XP and you can watch tv while doing it.
My only issue is the first 5 elites hit hard so you need a tank AND a healer to grind this out in a group.