It's all relative... what kind of computer are you using, the cpu speed, memory available, even OS and drive/ssd can make differences. Even on an i7 with 32gb and an SSD atom was too slow for a really long time... in fact after trying earlier releases of atom and brackets, I almost didn't even try VS Code. I'm really glad I did though.

In any case, it's just a matter of relative performance and perception in relation to what one runs on, and their needs.