I've used both at different times in the past for quick-edits, when my "main IDE" was Eclipse or Visual Studio (which are truly sluggish, and also native [1]). With VSCode I don't feel like I have to choose between feature set and responsiveness, and as such I haven't used either in several years.

I won't say VSCode is more responsive than Notepad++/Sublime, but I will say any difference is small enough that I don't notice/care

[1] Eclipse is Java, but that's arguably still more "native" than Electron