It should not take an i7 processor to run a text editor. I mean no disrespect, but either something is very wrong with your computer, or something is very wrong with this software.
Emacs only seems speedy now because computers have finally caught up.
Either Atom will get faster, or it will add so much value it's okay being slow.
And then computers will eventually catch up, just like they did with Emacs.
Texteditors must be fast and predictable. Tab support for vscode was it for me. Also, their ide must add overhead and yet still much faster than atom