[Fredrik]

If you use NFO servers, this works:

Change your server port (yes, I know this sucks.)

Then go to your ACP on NFO's site, go to the "firewall" page and block all incoming to the port :7777.
Should look like this:
https://puu.sh/xmwIh/c9d9d974db.png

Press save, and it should update within seconds.


If you're using any other Windows Server:
If you're having problems with Windows servers, you can block connections to the :7777 port, or any other port in the firewall settings.

Just go to "Windows Firewall with Advanced Security", go to "Inbound Rules", top right corner, "New Rule"
Then specify "port", press next, choose UDP, and write in the port you want to block, and press next, and chose the "block all connections" option at the bottom.

Start the server on a new port, and advertise it to your players on your forums or w.e. - and you'll have no lag and no problems.


This should remove all the lag, the incoming connections are causing.

What can I say, except you're welcome.