About the Time Steps Per Second problem

Omniverse Isaac Sim
1

[ ] 5.0.0

Operating System

[ ] Windows 11

Topic Description

It’s about the PhysicsScene’s Time Steps Per Second.
Below is when I set the Time Steps Per Second to 100, the moving part does not move while I click the play buttom.


But when I change Time Steps Per Second 100 to 1000, the moving part starts to moving a little bit and move back and forth repeatedly like bleow.

I don’t know why this happend. Please help me.
Thank you!

3

Hi, The PhysicsScene’s Time Steps Per Second parameter defines how often the physics engine updates simulation calculations per simulated second. In essence, it controls the simulation’s temporal resolution. If set too high(1000 for your case), physics may become unstable or oscillate due to numerical errors accumulating across extremely small time increments.

Recommended Practices (PhysX/Isaac Context)

  • Use a time step near 60 Hz for general robotics or mechanical simulation.
  • For tasks requiring very fine contact precision (grasping, soft bodies), use 120–240 Hz.
  • Avoid going above 500–1000 Hz, as performance overhead grows exponentially and may lead to unstable motion integration.