My experience with VS Code is that it has no perceptible lag, except maybe 500ms on startup. I don't doubt people experience this, but I think it comes down to which extensions you enable, and many people enable lots of heavy language extensions of questionable quality. I also use Visual Studio for Windows builds on C++ projects, and it is pretty jank by comparison, both in terms of UI design and resource usage.
I just opened up a relatively small project (my blog repo, which has 175 MB of static content) in both editors and here's the cold start memory usage without opening any files:
- Visual Studio Code: 589.4 MB
- Visual Studio 2022: 732.6 MB
update:
I see a lot of love for Jetbrains in this thread, so I also tried the same test in Android Studio: 1.69 GB!