Spring RTS Engine

i already had the ports forwarded, it's doin strange things though, some people it just shuts the game down, and others just time out while trying to connect once the map loads. if anyone has run across this happening i'd be greatly appreciative of some help

We've tried hosting from each of our houses, and each time, the people behind that particular router can connect but everyone else either times out or the game just kicks them out. any ideas why this might be happening?