Hmm, my testing has been a bit bad... It should take about 5-30 seconds, depending on your machine.<p>It uses a web worker to do the calculations, so it shouldn&#x27;t hang until it starts plotting stuff.<p>What OS + browser are you using? I noticed that it doesn&#x27;t work on Opera, for example. But on chrome it works decently even on my phone.<p>Most of the calculations are done client-side, the server-side calculations only take a few seconds.