Ladybug_fly - how do you slow this down?

I’ve been playing with Ladybug_fly and downloaded the Parametric Daylight Analysis script to test it out. Unfortunately, it ran too fast. Is there any way to slow it down or better still control it in some way, like take it one step at a time?

PS: From the downloaded script, it seems that there no need to link the output to anything. I thought what _fly does is to export values one at a time to the rest of the script so that it creates an animation of the output.