Yes, of cause the pay-off time is dependant by the processed ressources per time, and as such the rocket is a predestined use of productivity modules. However, any production path, that is not limited , is a valid target of Productivity Modules, and that's the problem. For example you can use Produc...

As of now, modules are quite inbalanced, in particular Productivity & Efficiency Modules 3. For Efficiency Modules: As probably most people at some point realized, Efficiency Modules are your no-brainer-solution to efficience. They are cheap, they are ridiculously powerful, have no drawbacks, an...