Indeed, that was unfortunately my experience. That thread has more detail, but generally, though volcano nozzles work well enough, the cooling seems to suffer due to the reduced overall length.
It’s unfortunate because there aren’t good bimetal nozzle options for the ACE (Plus) right now, to my knowledge.
K1 nozzles almost work, but the thread on those is just a little too short for them to seal against the heatbreak, at least for me. And the heatbreaks are secured with some type of thread locker, which means it’s not just a trivial matter to screw them in further.
If I had the skills and time, I’d be interested to CAD up a more “volcano friendly” fan duct, but for now I just use my bimetal volcano nozzle only for filaments that need the hardened tip.