Each instance has it's own net_port, is on it's own account, and I'm on r5869. It's still not letting more than two players connect to a lobby.

Hey y'all, trying to run BO1 Zombies with PartyDeck (basically Nucleus Co-op for Linux) and am running into an issue with connecting more than two players. Whenever I host a lobby on one of the instances, it says "recommended max players: 2" only one of the other instances is able to connect. If another connects, they kick the first connecter out of the lobby. I've also tried using sp_minplayers to keep the game from starting without all 3-4 players connecting, however that causes the game to start, even if only one person is in the lobby. I'm on the current version of Plutonium, I've seen people say that this only happens on very old versions, but this is not the case. If anyone knows what's going wrong here, I'd love to know what's going on and how to fix it. Thanks in advance.