Lag didn't make it fail, inability to add content and players rage quitting is what caused it. Lag was mostly brought on by people's internet connections.
AntX was too busy IRL whilst trying to implement APC into the game, and players lack large amounts of patience, not even attempting to improve. Regardless, the game is still playable and it'd be nice if a server was up which allowed people to connect.
Should probably make a designated time everyone joins for mayhem...