Actually, those issues have happened to me.
The few times that the boss stayed invulnerable in my group (I think it was Sabateurās final boss when fighting Lothar Rendain). We just waited for no more than a minute before he was able to be killed.
Boldur takes a long time to run up the stairs, but runs up after about a minute and a half? (I havenāt sat there with a stopwatch to check)
On Sabateur I normally jump up top on the catwalk above the back end of the room and snipe (if iām playing marquis or OM/WF) and that works out quite well. But those spawns arenāt a bug or donāt show an incomplete game in any way shape or form. Obviously if your strategy of mobbing everything at the center isnāt working, then change your strategy up.
On topic though, RNG is RNG. I have put 80 hours into the game and have gotten 10 legendaries and I donāt know if thatās lucky or unlucky. If itās a good ratio of legendaries per hour then Iāll just consider myself lucky, if not? Iām just unlucky.
Gear goes from uncommon to legendary with reduced drop chance the more rare it gets. Thatās how itās supposed to be right?