I'm not aware of any loading problems on Kongregate apart from ads shown by the Kongregate platform occasionally being halted by Chrome. Unfortunately we have no control over that as it is a feature of Kongregate.
Like all HTML5 games, if you tab away you will experience longer load times, as browsers put tabs that you are not currently viewing to sleep to conserve resources.
Like all HTML5 games, if you tab away you will experience longer load times, as browsers put tabs that you are not currently viewing to sleep to conserve resources.