Improve performance of molecular editor with many atoms (meshes)

Thanks for the code! Unfortunately, The screen is loading but the atoms aren’t

I find PyCharm to work rather well, myself–if you want an IDE, I can recommend that one, I believe.

Honestly, it’s a pretty easy mistake to make: it’s easy to forget that extra “3” when “python” alone is the intuitive command to enter, I daresay, and furthermore one that would have been appropriate if you previously used it with 2.7.