Why has no one ever tried to create and implement a Zsnes 1.36-style netplay code (i.e. direct-connect to opponent) to MAME?
As far as I can tell in Zsnes, netplay has little to no lag whatsoever, since it's one player directly connecting to another.
If they can do it, I don't see why MAME emulators can't. I like Kaillera, but at times, it's a little laggy, to be honest.