A fork of Factorissimo 2 focused on improving performance by implementing several 1.1 features. Can improve performance by 10X or higher. Also fixes several bugs from the original version.
Without having any Recursion researched yet, if place down Factory Building 1 A in a Factory Building 1 B and then deconstruct building A and place it outside of building B, you won't be able to enter building A again.
Enabling and disabling the 'Free recursion' option fixes that bug until you repeat it.