Dead from stupid Expedition rare mob 10x time buffed one.

Just angry.
Don't know where to throw that anger away.

Expedition skeleton rare applies 1x stack of poison to me (im at 20% positive chaos res + 40% from flask), im notice 1x stacks starting killing me and running away immidietly, pressing sulphur flask on the ground (around 1200 hp/sec regen) - and im still dead after 1.5 sec.

I don't get it.
How rares are so imbalanced still in this game.
Dying from 1x stack of poison, not 5x, not 8x, not 10x , but 1x from stupid overbuffed Soul Eater shit mob.