How does Smart RAM Optimizer work?

[Andrew Win]

I don't understand how this program can keep such low RAM usage.
Usually, programs of this kind clear the "unnecessary cache" at certain intervals, which greatly increases the load on the components, but, of course, it loads again, which makes it pointless.
Or they access the paging file much more often, which reduces the speed of work.
But it’s not beneficial for Windows to let the RAM stand idle just like that and it constantly finds a use for it, which speeds up work, but just unloading “unnecessary files” does not make sense, because when it really needs it, it will do it.
So how does it work anyway?