what this guy says…
and the fact that some 3rd party plugins can take up time during bounce due to bad programming, no updating or older version, or simply because they are very new and use very heavy dsp like programming.
See the difference between a Sylenth1 bounce and a VPS Avenger bounce.
Or Ozone 1 and Ozone 9 with all the components activated
if you have plugins like that, there is a big difference between “live” use and the actual bounce.
Also, some plugins bounce at different internal sample rates, like some limiters and even light clippers.
Put a normally ultra light 3rd party clipper at x32 oversampling, and you have time enough to make some nice matcha tea duting the final bounce 