Geonor drops on you with very short notice

If you are lucky, you are out of the circle since you are moving already or you are almost out so one dodge enough. Otherwise no chance. I am stuck at act 4.

I agree that it's not very intuitive, the drop mechanic telegraph comes out very late, giving you no time to dodge it once you see it. You have to watch the boss instead as he will disappear a couple seconds before the attack and locks onto your current position and will drop there. The moment he disappears you need to stop everything and start running and rolling.

Not sure it is "seconds", but hard to watch him while you are keeping him out of screen while running away from ice, red beams and other stuff. Hard to hear his voice staring the action either.

Anyway I beat it after 40m or so.