In the most recent hotfixes, Delves have been nerfed again!
Delves have been nerfed again reducing the health of elite mobs (e.g. Nerubian Webspinner, Kobold Taskfinder), minibosses, and Bosses!
Here's what we've seen so far while solo and we're not sure how this applies to group content.
This should make Delves slightly easier to solo, but there's still a chunky amount of health to DPS through, especially while solo. If you have details on group content, please leave a comment below!