PhysicsStepTimeMs
NotReplicated
This item is not replicated across Roblox’s server/client boundary.
ReadOnly
This property can only be read from. Attempting to write to it will cause an error.
A measurement of how long it takes for the physics engine to update its current state, in milliseconds.
If this value is high, then it means the game instance is under stress from the physics simulations taking place.