I just found that if you order about twenty clones they all sort of merge together and explode on exiting the rocket.
Good times. Lots of blood.

Gonna go try that...

It's led me to a tactic I have dubbed "body bombing." When i figured it out, I would load a transport to the brim with millions of clones. It's the only thing i know of that can lag this game. It bothered my cousin insanely until we both started doing it.
Then I discovered that you get better spread if you open the missile on the way down. All the clones flood out and seem to cut each other into pieces. I made a fortification of bodies, at least 7 thick around my base once. Or at least part of it, as you can't steer a fully laden transport.