I’m using a listen server host method, exactly like in Multiplayer Shootout example. Clients can drop in and out at any time. Clients sees 9999 ping on every host when they get a session list (BP posted in first post). Nobody can see a real ping. 100% of all cases do not see a ping other than 9999 of any game session, no matter who creates a game. If this is a firewall issue, every firewall blocks only ping information, but playing game is not affected at all it seems.
I’ll have to test disconnect issue further with longer waiting periods and will tell you after testing.
Here is my Steam folder:
