DE has some issues with content clearing speed. It’s plenty powerful against a single target but it will feel slow when farming.
Take a look at @zupa’s DE Spellbinder, most of the gear will be good for a Ritualist build as well. Synergy with Blood Pact and Devouring Swarm should help Shaman perform here. [1.1.7.1] Bro, do you even leech? | Drain essence spellbinder | Facetank all Ravagers | SR80+