Duty Support needs some work

[Absurdity]

It’s slow because they don’t use AoEs like players do. Nor can the NPC healers handle if you pull two groups at a time

They can but it's a risk because their scripting, or whatever else controls NPC behaviour, is slow to react to any changes.

So you can do wall-to-wall pulls even with trusts but be ready to sprint back to the healer NPC that is gleefully spamming Dosis/Malefic/Glare or run circles around the tank NPC until it manages to pick them up.