I can easily open 20ish projects, but the experience is often still sort of sluggish.
Like, change a file outside of the editor, open it again, and it’ll sit there stuttering for a bit while it realizes the file is updated and it has to re-index.
It’s not the end of the world, but the experience there could be more fluid. Because you do this often (e.g. every time you switch a git branch)