Abyss Mobs in the boss room

I am not sure if this has already been adressed but, running t15 waystones with max modifiers and the atlas tree built to make it even harder.... the boss alone is hard enough to deal with

So when i go into fight the sky seer bird boss on a map i am barely able to run and i have to fight off "lichborn abyss minotaurs with AOE that covers the whole boss arena" while getting AOE attacked by the birds invincibility tornado and also having to deal with all the ground effects made by abyss and the boss

How the hell am i supposed to live. genuinely... abyss mobs are insanely OP at this current stage of the game and they make 70% armour feel like nothing