For me it's not so much the slow start-up time - that I can deal with since it happens so infrequently - it's the intermittent lag when typing or selecting text

For me it's not so much the slow start-up time - that I can deal with since it happens so infrequently - it's the intermittent lag when typing or selecting text, and the high memory and CPU usage. A text editor should not be consuming 100% of a CPU core for almost any length of time and making my laptop sound like an aircraft carrier. I love the concept of Atom (OSS text editor is awesome!), but it's bordering on unusable for me at the moment.