Thanks, I had apparently somehow made up a wrong understanding of the uber.
I'll rerun it tomorrow morning
This time with the right gear too
After belial: JD upgrade and then, Quov Tsin!
OKay, after fixing the misunderstanding (I confused rats with henchmen... good morning) belial was done. Sadly JD upgrade hasn't happened. After summoning edyrems for 45 minutes with a friend we didn't get Malthael and Imperius to spawn at the same time. It shouldn't be a waiting game if the skill is obviously good enough to finish the quest
I hope something gets changed because RNG now still is too big a factor. We even tried luring the edyrems away from Malthael when he spawned but he kept on following us and at one point he spammed me with 6 consecutive nukes.
Gonna retry it later, maybe I'll be more lucky and they will spawn faster next time.