As for FPS; The animations are created using code that manipulates the CSS to create the effect of animation. It is not a video, so I don't think there is a frame rate as such. For instance: if you had a colour change at 3 seconds into the animation, the colour is simply changed at that time by sending a new instruction to the browser. If you are moving an image from one place to another, the location of the image is updated from point A to point B based on the time overall and some other factor (perhaps the refresh rate of the monitor?). This is just my guess and it would be nice if one of the GWD team responds to confirm or correct my assumptions.