Windows 10/11 network does not show all the computers

Three PC - Win 11 Home, Win 10 Pro (2x) Gigabit Ethernet, router (CISCO/TP-Link/Mikrotik) as DNS and DHCP server (static/dynamic/predetermined), the same workgroup Setting is the same in all the PCs: Network = Private network. Private networks - Network discovery ON, File and printer sharing ON Public networks - OFF, OFF All networks - Public folder sharing ON, File sharing 40- or 50/bit, Password protected sharing OFF After I switch all the computers on, I can seldom see all the three on all the three PCs. I tried dozens of setting both on PCs and routers. Nothing helps. Restarting router, re

Question by Vladimir Z. on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.