Parenting 2000 spheres and/ or copying rigid body settings to 2000 spheres

Question is, why does this take sooo long? Almost 2 hours??? That’s not a good workflow!
I can’t imagine that parenting only or copying settings only, Blender has to be busy for hours.
Why not wait calculating stuff till user wants to render/ simulate? Not before!

Can a Blender dev explain this and is this going to change in the future?

Thanks!

Take care and be safe!

Freddy Peters - Cyberfish