Plutonium

When I try to do a private match it freezes for about 30s, sometimes it gives me an error in creating the lobby, other times it works after waiting and i can play with friends

Thomaskuhh If I create a dedicated server instead of creating the lobby in game, can 4 people play?

I tried to do everything but no servers appear in the list, moreover when I do to create a lobby the game remains 30-60s blocked and then gives me an error.

port open:
3074 udp/tcp
27014 - 27050 tcp
3478 udp
4379 - 4380 udp
27000 - 27030 udp
28960 udp/tcp

I'm not under NAT, I also host a webserver on another computer, port forwading works

windows firewall disabled

works fine on another computer in the same network

on the same computer the black ops 2 server list works

I also tried to delete the folder: AppData\Local\Plutonium\ but nothing changes

the internet connection is good and stable, I have a FTTH in italy

i tried to change filters and click refresh in server browser

what else could it be?