[jw14]

As an Atom user I wanted to try this because historically Atom has been worse than VS Code at large files.

I don't have a 500k word text file laying around, but I tried an 80k line SQL script. FWIW, it's 8.5mb and the Atom wordcount plugin claims it's about 1.5 million "words".

Atom opened this file in 3-4 seconds and memory usage only increased about 30mb.

Navigation grinds to a halt with the wordcount plugin enabled. Once I disable its "always on" feature (normally it doesn't pay attention to .sql), navigation and editing seem snappy.

Just a data point. VS Code should be able to get much better...