I doubt my mac is the issue, its a few years old now but performance is good and the poor performance only happens in this instance. Also i installed Chrome simply to run C3 so there are no plugins or anything.
The game is 2000 events because its a sim city type game and there is a lot going on. It's not an issue running the game, the issue is the C3 editor itself. It doesnt look like it can handle displaying the events.
I guess i'll file a bug report but i don't want to upload the source file.