Reduce brush sphere resolution

The goal is to reduce the resolution of the Sphere Brush (i.e., make it more polyhedral).

I assume this can be controlled through one or more parameters in the scripted module, but I have not found any settings related to this.

I would like to do this because when I increase or decrease the brush sphere radius, my PC takes 2–3 seconds to render the updated sphere, which is quite annoying.