every day about 8 pm i have timeout in my lan ping
and when i disconcet one of my main line (( it about 40 pc )) ping come back again
i dono why ??
is this about virus of loop back or what ??
use winbox torch to have a look at whats happening on your lan segment.. probably virus/malware or a dodgy user! then use firewall rules to block/disconnect them.