This guy is still a huge problem.

I just tried to do three expedition levels so I could bump up to the 142 starting bracket and, of course, I got the Pacified Aurora Knight again at the end of the third one. I thought, "Great, he no longer regenerates and he won't summon his healers every 20 seconds, so this should be far less stressful."

Nope. It was just as difficult and I ended up with a 15 minute fight and my left hand is now killing me from spamming each spell like 4-5 times. Why? Because, if I don't, then — DUE TO SERVER LAG — spells don't fire or they don’t fire in time for me to try to stun-lock him with Winter's Grasp and he and his minions become more and more of a problem. He just gets healed right back up. It was not an enjoyable fight.

As I wrote elsewhere, there needs to be a finite number of summons that he calls to heal him. Four would be fine. At least that way, I would know the fight has an ending and I don't need to wreck my left wrist trying to stay one second ahead of him for 15 solid minutes.