Hi @InTheOne,   Browsers don't like it when you change the source of an image, as it has to check/repaint the entire image, which is likely the cause of issue in FF. To eliminate this, I would load all your images to the dom and use your tween display/hide them with opacity/visibility (autoAlpha), or better, yet, stitch the images together as a sprite sheet, and tween between them via transform, using a stepped ease, (hardware accelerated) in an overflow hidden div (similar to this exa