# Speed Performance

By default, all blob properties are computed by the Blob tool as specified by the tool's parameters. You can improve the speed performance of the tool by disabling certain blob property computations that you do not need.

You can disable the following:

- Region boundary, perimeter, or region image measurements; saving run lengths of regions in the blob scene description.
- Computation of the inertia, principal inertia, angle, and elongation of the regions.
- Computation of parent-child relationships between regions.