Frozen Mandibles enemy monster is too strong

Just literally has 3x speed of player, it makes 2 attacks while I cast 1x 0.9s spell and so that interrupt casting. Often it spawns with Haste and so becomes even faster and literally shredds the player no matter the defenses and build. It's either you kill it with one-shot or it kills you either way, nothing in between, no mechanics to hide or kite it - it simply faster and stronger.

Why? It's not a boss or pinnacle boss, it's leveling area at the point, where players usually in between the gear upgrades (limited by levels of the gear). What's the point of putting ultimate killing machine in random place of Interlude?

Please, nerf the monster (and, maybe, this way it can be returned to Spectres\Tame Beast if it was properly balanced in the first place).

Thank you!