Maybe it's just me, but it was quite choppy. Like the effect though.
This is not WebGL and it uses CPU to calculate proximity between each points and render afterwards. Therefore, it's normal to be choppy if your CPU is not a new one.
It seemed to perform well for me, but I too now see it as notably choppy. Jonathan hasn’t updated the repo… not sure what’s up.
Reminds me of the Google Ventures background. I was just thinking about that effect and canvas yesterday—great timing, can’t wait to check out the source.