Saw a comment on youtube today :
‘‘Best way to farm obsucite now is to do infernal hordes without your pet. Don’t pick up any aether late into the run, leave them on the ground. Get the 200 aether gear and trade the rest for gems and obducite. Then pick up your burning aether one by one, each grants you 260 (i could get the number wrong) in T3 and 350 in T4. So tens of thousands of obdicite could be farmed every hour. This has to be a glitch, don’t know when it would be fixed. I shamefully did it for 2 hrs and got like half a million obducite.’’
It also works ingame 