Maybe it's being a while but... give a try to logykopt-schema (SCHEMA) is very useful software in terms of planning and scheduling. For example, for injection molding, you can have several production lines, and several thousands of part numbers and still be able to simulate the production for over a period, and also to restrict some of the resources: molds, machines, wait times, downtimes, maintenance. It is also packed with Execution and control tools such as OEE, OTIF, and many more. The system is hosted on the cloud so it's easy to try.