Time.timeScale not working for Unity.Physics package (DOTS)

Question

if I set Time.timeScale = 0; nothing changes, if set Time.fixedDeltaTime = 0; my physical objects begin to behave strangely, but do not stop completely. Maybe someone knows how to change timeScale for DOTS Physics

Answer 1

In Unity.Physics\ECS\Base\Systems\StepPhysicsWorld.cs inside the OnUpdate() function modify the timeStep value with your scalar so it would look something like this :

float timeStep = Time.DeltaTime * PhysicsSettings.TimeScale;

// Schedule the simulation jobs
Simulation.ScheduleStepJobs(new SimulationStepInput()
{
   World = m_BuildPhysicsWorldSystem.PhysicsWorld,
   TimeStep = timeStep,
   Gravity = stepComponent.Gravity,
   SynchronizeCollisionWorld = stepComponent.SynchronizeCollisionWorld > 0,
   NumSolverIterations = stepComponent.SolverIterationCount,
   SolverStabilizationHeuristicSettings = stepComponent.SolverStabilizationHeuristicSettings

}, m_Callbacks, handle, stepComponent.MultiThreaded > 0);

Where PhysicsSettings is my class for storing dots physics global variables.