Flexible Games Builders Pack

Massive overhaul to the pack to crush memory leaks and RAM usage creep that I ran into in testing.

I do not know how other pack-makers actually mange to fix these issues, why after 16 years are we still needing 6+ mods to fix performance and memory management of the game?

Various mod changes and updates.

All the changes are in an effort to make playing long sessions late-game more viable. Feedback or ideas appreciated!

We may have to sacrifice Oritech, seems that mod behaves poorly on the render-side.