Is UPnP a rubish protocol ???

[stefano_mbp]

… comparing UPNP and DHCP seems quite … senseless …
In my network Minimserver and endpoints are all connected to the same switch that is connected to the router and I’ve never had any issue.
You should give a look to your network topology: it’s not a good practice to have switches in cascade, each switch should be connected to the center of the star (ie the router), in this way you’ll avoid speed issues.
… and it should be better to have switches of the same vendor/model to avoid various protocol issues