With ‘Rotations’ = 90, ‘Iterations’ = 60 and the default ‘Seed’ = 1, I got this, which sure looks like it could easily be only four sheets instead of five.
Increasing ‘Iterations’ to 90, decreasing ‘Spacing’ to 15 and changing ‘Seed’ = 1, there is no improvement, yet time goes up from 56 seconds to 1.7 minutes!
It’s a little frustrating, the “nesting” could be better.