Pit Bosses Dont Work

You developers need to either quit making those bosses that are rooted in the screen centre, or to seriously improve the mechanics. I was just fighting Tor Gul and although I killed it a couple of times, the encounter is just bugged. As a melee class, I have to stay close and dodge to the outer edge when heßs about to cast his circular AoE. I saw it coming, I had plenty of time to roll to safety and yet nope, impossible. I was stuck by the sheer bulk of this boss, as if it was blocking the way, blocking my way to safety, even though my mouse pointed nowhere near him. Really you gotta choose btw making challenging encounters that work, or easy ones that dont. You cant have it both ways, especially in hardcore.