Sorry, I only saw this TweenLite brand inside my Firefox stack trace, always when my games have trouble, so I wrote here for help, I don't want to blame you. Maybe you could detect somehow two TweenLite ads running at same time, and do something for CPU use, or is it best solution for 3rd party website owners to give a command like TweenLite.ticker.fps(15);
I will try to add here a more detailed stack from firefox soon