HTML5 is critically dependent upon hardware acceleration. So anything that can't be hardware accelerated wherever the games are running will be slow. If your dr

HTML5 is critically dependent upon hardware acceleration. So anything that can't be hardware accelerated wherever the games are running will be slow. If your drivers are bad it will be slow. The next step will be people creating ridiculously complex JIT setups just to get back somewhere near native throughput. Note that is _throughput_, not latency. Every layer of abstraction adds more unpredictable pauses and non-reproducible glitches. All so people can slap together the next Angry Birds clone with zero technical artistry.