Multiple swf communication

Hi all,

So I’m trying to figure out how to have 2 people, at 2 different computers, interact with a swf and both people see what the other is doing in live time. I’ve seen this done with flash games before, but have been having trouble figuring out what I should be looking into to get this going.

I’ve already tried it with flash remoting through amfphp, and while it works, it gets pretty processor intensive pretty fast. And that’s just for a simple pong-like game.

Any help or suggestions will be greatly appreciated.
Thanks