Respectful suggestion that you have no obligation to follow up on, but it might be a good idea to replace that gif with a more recent capture, or even to just remove it? I ran into your project a while ago, before it got featured on here, and that specific gif is the sole reason I never looked into it any further; my immediate reaction was just, "oh, never mind, it looks like the latency is too high to be useful."
Seeing your comment here is actually a happy surprise since I remember thinking at the time that it would be a really cool project if only the latency was even just a bit better :)
60ms is still probably too high for most drawing (of course to be fair, WIFI I'm sure is a big part of that), but it's usable enough that I don't think I would have dismissed the project outright if I had known that the gif wasn't representative.
Either way though, cool project, and I appreciate the clarification.