Expedition monsters need nerf

These monsters are tanky beyond all other monsters in the game.
I can rip through tier 16 maps with ease but a lvl 83 expedition has me taking 20 second to kill a common white mob which is longer than i take to kill t16 map bosses. And this is with all my buffs active
What is up with this?!
ive read all the map modifiers and remnant modfiers and the only thing that buffs their defense is "30% chance to avoid all damage from hits"
Why are they SO TANKY?!
I need to know

You probably increased their block chance and stuff like that. Check the mods before you go boom. Avoid mods you can’t handle

No. As stated in the post
i checked all the mods
they were taking very little damage. every hit was like 3% of their life