I Could Use Some Help

I haven't really gotten any good advice or help from chat..

I need some help with Hall of the Grandmasters. Not the usual problem where death is a thing, more like I can live through about anything, but my DPS can't beat the regen of the mobs. I realize that not every build can clear HoG, but I show 100k tooltip dps when buffs are going, and I really thought that'd do the trick.

For the short term, can anyone with dps party up and help me clear out the last few immortal mobs?

For the long term, am I doing it wrong?