FPS: Avg:

Number of scenes to draw Few 1 More

Calculating FPS past requestAnimationFrame limit with requestIdleCallback

You'll need Chrome Canary or Android Chrome Dev with Experimental Features enabled
(more info in Using requestIdleCallback)

Add or remove scenes to see how framerate is affected.
Use Chrome's built-in FPS counter to compare.

Jaume Sánchez @thespite