VSCode is only fast by IDE standards whereas functionality-wise it’s more an extensible text editor. It lags even at the modest task of resizing its own window, where the UI just freezes at its original rectangle and waits until you release the window. No native app I use behaves like this. This is even before mentioning the innumerate pop-up <div>s that all have different, inconsistent styling. As an application it’s absolutely alien on the system.
I'm in the process of adding "lipstick to the pig," so to speak, on the app I've been developing for quite some time, now.
It's not done, but we are at the point where we can start trotting it out to people from whom we are begging money, so I want it as polished and refined as possible.
This means lots of "little" things, like smooth transitional animations, fast operations, threaded behavior, etc.
Native is good for that. It's lookin' pretty good. No compromises.