Invalidation by distance
Disables / enables simulation depending on the distance between the body and the specified object (usually a camera).
This is effective when you want to reduce the processing load by turning off the simulation when you are far away from the camera.
|Reference Object||Specify the target to measure the distance.
If none is specified, the main camera will be selected.
|Distance||Specify the distance to turn off the simulation.|
|Fade Distance||If the simulation is turned off by fading, specify the fade distance here.
For example, if Distance is 20 and FadeDistance is 5, the fade process will be performed between 15 and 20 distances.