Hm i never did POTD for them, the rng drop rate wasnt good.

Delubrum can be cleared in under 15 minutes, but everyone should use damage buffs. to speed it up.
I guess now it is just hard to find a group? I have farmed all relics during shadowbringers though.
If you plan to run delubrum, make sure to always have both quests active, because you need to run 3x delubrum for the last relic stage, but you can already farm them in advance.
anyhow, look forward to 85x delubrum for all relics.