With the dynamic scaling of mobs the bosses in chapter 1 are too difficult. I was running around with 900% bonus xp. By the time I made it to electro I was was lvl 28. Unfortunately, I only had on hand a lvl 1set of gear. Completely undergeared to take on the dynamic scaled Electro. I suppose if I am so over xp bonused I need to carry appropriate lvl gear to help. He killed me so quickly, it was like trying to solo a raid boss.
Making matters worse, upon dying, I get transported all the way back to the roof at the beginning of the chapter instead of the last phase portal like all other bosses. He was even blasting through my lvl 60 Team-up like was a lvl 1.
If we have an xp bonus working, chapter 1 become very difficult. So difficult that we are seeing people needing groups to kill a boss that should be set to an introduction level.