It's mainly speed.
I don't know if it's fixed now. Previously when I was using VSCode, sometimes the "go to definition" hangs and it will freeze the whole editor, which was unacceptable. So in Lapce, nothing blocks the main thread other than your key press.
Re:Lapce – Fast open-source code editor
by GekkePrutser on Thursday March 17, 2022 @10:16PM
(#30718072)
Interesting, I'll definitely give it a try. Thanks for building it.
I like that this is native though. VS Code is one of the rare good electron apps but native is still nicer IMO. Will give it a try.