I am trying to build a TDM that focuses heavily on vehicles, but my max amount of physics vehicles will not go over 20. I have opened the Advanced Config menu and set the max physics vehicles to 100, and even changed the LAN settings for it, but when I start the server and try to place a vehicle it still says the max is set to 20. When I go back to the Advanced Config menu the max vehicles is once again set to 20.