I've been trying to host a A&B server for the last 2 days but running into massive TPS problems. With 2 players online it runs between 19 and 20 TPS, so just fine. If a third player joins the TPS drops to 10-12. Switching the game to peaceful fixes this, so my thought was to lower mob spawns by use of InControl. But even disabling all hostile mobs the TPS stays 10-12 but again turning on peaceful fixes it.

Server is using the recommend specs but RAM or CPU usage never seems to be a issue.

Is it possible to host a server for more then 2 people?