I tried this with a canvas (putImageData with alternatively the positive and negative frame) and it wasn't any faster on desktop Chrome (and slower on iOS devices).
I tried that too (https://github.com/mihaip/web-experiments/blob/master/tempor...). It still flickers, I'm guessing because the frame delay interval is specified as an integer, and both 16 and 17ms don't quite line up with 60Hz (or whatever the screen's refresh rate is).
