Nicolas,
I learned something today!
It took me a while to figure what you where referring to.
I have not looked at that option for years - perhaps I imagine seeing it before.
So GOLD STAR to you.
So to make life easier here is the Option.
I think there are lots of places stopping regen is important. The larger the assembly, the less external regen you can tolerate so you have to manage that manually during high edit stage. Once you are close to final then the regen load is less significant.
Cheers Paul