[voltagex_]

Have you tried VS Code? It was noticeably faster than Atom when I tried it.

[timehastoldme]

I have, and it's fine, even on my mbp. Perhaps I'll switch? Margins are low because I don't code all that much.

[leonatan]

It's an excellent text editor, don't pay attention to its title too much. It does a better job than Atom at both.