Yes. It originally did allow you to hover over the countries to see more information. But combined with everything else it required too much memory and caused it to run slow on mobile browsers.

Doesn't seem like removing a tooltip should make the difference, but it allowed me to simplify the map, remove jquery, and make a few other simplifications to the code.

If I were to make it over again, I would use WebGL for the particles next time instead of Canvas, and performance problems wouldn't be an issue.