When I try to host a game online, players cant join because it says "latency is too high". How do I fix this so I can host a game.?
Make sure you are not uploading anything, which includes torrents as well as internal LAN file sending. If you have a dynamically changing bandwidth, make sure you are not downloading anything either, as that can affect your upload capacity. Set everything as I describe it in my hosting tutorial thread if you have a router. If you have any kind of firewall be sure to mark SC and its port range (6112-6119) as an exception.