Aul mechanics.

Now, this has been a bit of a trigger for me in the past couple of days. I delve. And I find an Aul. And 70% of the fight is him going in between mechanics, where you cannot dps him. Yes, I am zDps (RF Jugg), but still I decided to time it and check the number of times :

8 min fight @ depth 362
12 times Shield charge invuln phase
20 times the ground slam where you need to get out of range, as he will kill even tanky characters with it. But even if you don't - while he is doing it - he's still invuln.

And the worst is he often goes - shield charge into a ground slam and 2-3 seconds later - again a shield charge. FFS, make them on a cooldown or a % life lost, this is absolutely obnoxious and making the fight incredibly B O R I N G.

You wanna change the fight mechanics because you do ZDPS?