Vscode struggles with intellisense and vm round trips on my older cpu. Feels like a race between displaying the character I just typed and displaying suggestions. Sometimes.
to be fair, it's possible that I also experience this from time to time. Since it's an old laptop, sometimes things are slow and I have to wait a bit for intelligence to initialise and cache results. But generally, especially if I close most other programs, it feels reasonably snappy and I don't have the displaying issue.