How to change sync period

Hello everybody ! I noticed that the files are synchronized every 5 seconds. How can this period be reduced and to what costs (battery consumption, traffic) will this result?

It can’t I think.

fsWatcher Delay in the config? Rescan interval?

I think there is (or used to be) a forced 5 second delay before starting downloads to be able to accumulate more changes into a single pull cycle.