I did a simulated annealing version 5 or 6 years ago (so I could have a neat Christmas card), and was surprisingly slow (well, I had a slower computer, too). Congrats on making it fast and nice (and exporting in vectors, which is something I didn't bother to even try!)

I found similar results in my simulations as well.

Even my genetic implementations were "slowish" both simple hill climbing (single parent) and two parent with cross-over/mutation. Though, after seeing this awesome implementation, I'm going to go do some work on improving mine.

Good luck! I don't plan on revisiting mine for the time being (more interested in some Scala stuff I have parked on the side)

Thanks. :) I wrote mine in Kotlin ("genetic_draw" on my GH). The best of both worlds, fun side project + new language.