I don't know how is it now, but I've used it for a couple of months for web dev on my mac and switched to Atom when noticed my cpu was 70%+ of usage all the time. I suspected it was because of the typescript plugin, but honestly I don't care Atom doesn't do that and I'm happy with it.
I'd have at least spent 15 minutes working out what was causing it before taking the jump and switching editors?
Edit-to-add: with your downvote you are invited to explain why/if I'm wrong.