I think VSCode use ripgrep and Zed has its own ripgrep-like search. Zed likely still do more work per match due to the multibuffer. A normal nested tree-based result should be faster.

I think multibuffer can be good in edit/renaming use cases, but it's very annoying for fast lookups/navigation across different files (as mentioned elsewhere).

IDK if both use ripgrep it is even more strange why it's so slow in Zed.