I'm in the US and try to play HOMM3 online with a friend elsewhere in the US and one in Japan. We successfully played many games together last year via GameRanger and then something changed at one point because stopped being able to get games that would last beyond a week. We'd start a game, get connected and play a few turns and then one of us would get stuck on "receiving data" between turns and it would disconnect. We've been trying to troubleshoot this for many many months now with no success. We've fiddled with port forwarding, firewalls and whatever else we could think of. Has anyone encountered a similar issue and been able to fix it? Or, can anyone recommend what settings we might want to check on each of our ends to make sure we're all on the same page?

Thanks in advance!