In theory .NET should be "better". In practice this really depends on way too many factors including how experienced were the programmers who implemented the software. In any way I am not an expert in this area.

I do use VS code as for some tasks there is no viable alternative for me and since my development workstation is a monster it runs fine. My own desktop apps however are native and I test them on really shitty hardware where one would not dream of running VS Code / Slack / whatever.

For fun I've compiled my main desktop product to 32 bit and it runs on a friggin old netbook just fine. Also from my point of view speed of development is not any slower when developing native applications. So unless client specifically requires it or I am doing some front end in browser my desktop apps are all native and coded in Delphi/Lazarus and my backends are C++.