Hell's epic spears are 1hits on standard mobs. 2-3hits for things like Stoneskin and Unstoppable elites. Bosses go down after a few seconds of spamming with height 0.1.
Dopplers are still a bit annoying though. They fall after 1-2 hits and they have such a low profile you can't hit them with spam until they stand up unless you get them at the precise angle/elevation. :/