What is the "cleaning times" setting in the tapo app? It's values are 1, 2, or 3, and it has a little "recycle" type icon around the number.

I can't figure out whether this means that 1 is fast cleaning or 1 is slow cleaning or 1 is a specific time of day or sequence. There is no info about this anywhere in the instructions. And this setting is called "cleaning times" in the configure custom cleaning plan. Very ambiguous.

Also, what is the advantage of slow/fast cleaning vs just increasing or decreasing the power?