Yes he doesnt instantly cause a wipe, that wasnt my point you still had to manage your dps before the phase change or a wipe would happen if he split with stacks eventual or instant a wipe is still a wipe. And do we even know if this is an intended mechanic or a bug ive only seen it a few times and if it is intended im sure the "Tight enrage window" will be nerfed/tuned properly to account for higher ilevels seem to be just lack of testing imo.