The AI of Gardak Bruntsmash is quite noticeably off. He spends more than two thirds of his time moving around trying to get behind the player that has his aggro and less than a third actually swinging at you. (I was not using Deception items, and was continually turning to face him when he moved).

Can I suggest you change it so that he mostly stands and fights you toe to toe, but a maximum of once per fifteen seconds he tries to reposition himself favorably and gives up after two seconds if he hasn't been able to get into a position he can sneak attack from?