This property determines how the collision model of the TriangleMeshPart relates to the actual geometry of the mesh. In situations where the collision model of a mesh is unimportant or precision isn't necessary, it's a good idea to use Box to improve performance. PreciseConvexDecomposition provides the most accurate collision fidelity.
CollisionFidelity has four options, the results of which are demonstrated in the images below.
A visual representation of a MeshPart collision model can be viewed by enabling Show Decomposition Geometry in Studio's settings.
This property cannot be read or manipulated by scripts during run time.