Yeah. It’s kind of crummy design but if you’re doing delves as or with a tank, they beef up the power of the mobs such that the tank is ‘required’ in order to survive. I have a friend who I occasionally run delves with and when they’re in tank spec, if I happen to catch a stray melee hit it’ll wipe out like half of my HP bar compared to when I’m solo where Brann’s potions easily outheal the white swings. 