Much better: smooth animation and smooth audio, with Safari 9.0.1 on a mid-2014 15" Retina MacBook Pro. With Chrome 46.0.2490.86, the animation is smooth, but

Much better: smooth animation and smooth audio, with Safari 9.0.1 on a mid-2014 15" Retina MacBook Pro. With Chrome 46.0.2490.86, the animation is smooth, but the audio is stuttering quickly and noisily.