Jamie Wong's post on hacker news earlier this week was a massive help in allowing me to switch to using WebGL for the rendering portion. His post can be found here:
http://jamie-wong.com/2016/07/06/metaballs-and-webgl/
No luck on android 5.1.0 with Chrome 47.0.2526.83 for me, just a black screen. No errors in the console either. Sorry I can't give you a more helpful description.
https://github.com/andrelaszlo/webgl/
It needs a little refactoring, and probably only works in Chrome.