How to manually tick a system group?

Unity Engine
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1

My game is simulation heavy and before the player starts I want to “warm it up”, i.e. run the simulation for quite a while. How can I achieve the following two things:

  1. Disable rendering and just tick a custom (or the full FixedStepSimulationGroup) many times as fast as possible.
  2. Change the SystemAPI.Time.DeltaTime variable during this phase to a higher value to furthermore increase the speed.

Any help appreciated!

2
  1. Manually call Update() on the SimulationSystemGroup or use an IRateManager.
  2. WorldUnmanaged has an API for pushing and popping time. And you can also do this with IRateManager.
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