It's hard for these other Electron based editors to completely replace Sublime when they are so much slower. People say that they don't notice how slow Atom or VS Code are, but try running them on a 5+ year old laptop like mine.
This one isn't Electron based, but rather it uses QML (i.e. Qt Quick).
I use VS Code on an x220 every day. If an old machine is the only thing keeping you stuck with Sublime you should invest in a new machine. Hardware is cheap compared to productivity gains.
I only use VSCode because currently it has the best experience for Rust.