If you disable it, routerOS will functionality only being an NTP customer. Good enough if you need to use exact clock for logging and so on. The gadgets on your community ought to use external stratum 3 or four NTP servers similar to the pool.ntp.org clusters in any case. I https://https-www-winbox88trust108631.isblog.net/5-simple-statements-about-winbox88-login-explained-52465322