Quote from Jaetch
Vault of the Assassin - pick up 5 NV stacks
Dahlgur Oasis, attempt full clear
Then directly head to Ancient Waterway in the northeast corner
Clear both Eastern and Western Channels
Just tried this farming route yesterday, but after the channels i still went for the Hidden Aqueducts always got 2 elit packs and a bunch of whities. Got from Plvl 42 to 44 in about 1h30 and 5 legendary drops.
I used to farm act I but after last night i'll stick to act 2, it feels somehow more packed.