If you put mine in “Sport” for a while and then back into “comfort” it tends to activate the stop/start a lot faster than if you leave it in “comfort” from the off.
I wonder if that’s anything to do with engine/oil temps? As in sport gets it hot quicker with the presumably higher revs and it might need to be warmed up to reduce load on the stop/start system.
If you put mine in “Sport” for a while and then back into “comfort” it tends to activate the stop/start a lot faster than if you leave it in “comfort” from the off.