[robin_reala]

Also, size of files. Less of an issue for typical codebases, but VS Code historically has slowed to a standstill on anything remotely large.

[nox101]

I regularly work on a code base with 250k files. Haven't noticed any slowdown

[sebastiennight]

I think the comment you're replying to was blaming slowdowns on the size (in lines of code) of individual files, rather than the total size (in number of files) of the codebase.