The Auto-Disable area contains settings for creation of thresholds beyond which the Physics Solver will cease to solve. This lets you save system resources by disallowing solving behavior that is no longer visible.
You can activate or disable every simulated object. When you disable an object, it no longer participates in the simulation, and is not updated. You can only perform Collision detection with two enabled objects, or an enabled object and a disabled object.
Lets you set a linear velocity limit for disabling an object. When you specify a Linear Threshold value, you create a limit so that when the Linear Velocity goes below this clamp, it is disabled.
Lets you set an angular velocity limit for disabling an object. Once the Angular velocity goes below a specific value, it clamps and disables the object.
Lets you set the number of simulation steps that an object requires to be idle before it is disabled. Set a value for how many steps the action performs before the object is considered dropped. The lower the number, the faster it becomes inactive.