> You'll have to file a bug report, because none of the built-in LSP stuff should cause any performance degradation.

That's a bold claim. Migrating from NCM + clangd integration is absolutely slower.

> This has nothing to do with LSP.

Sorry, you're right. Tree-sitter-based syntax highlighting is buggy and slow. My point still stands.

> Neovim does not automatically create files in your repositories.

No, you're right. Clangd does. I was commenting more on my experience, less Neovim's LSP behavior specifically.