The space used to run the simulation. The options available for selection are as follows: Component: Simulation origin will be calculated using the location and orientation of the Skeletal Mesh component. Actor: Simulation origin will be calculated using the location and orientation of the actor containing the Skeletal Mesh component. World: Simulation origin will be calculated using the world origin. It is not recommended to use the World simulation mode with Teleporting characters. Root Relative: Simulation origin will be calculated using the location and orientation of the skeleton's root bone. Bone Relative: Simulation origin will be calculated using the location and orientation of the bone specified in the Relative Space Bone property.