FWIW re: performance, I love Obsidian, but performance is it's one main downside for me. I could care less about the real-time collaboration (they are my notes, not for team consumption, I'll share a file somewhere else for that) or self-hosting (sync so my notes exist wherever I am is more important to me than hosting them anywhere, again, my notes are private on purpose; obviously that isn't the case for everyone).

Anyways, just a counter-point to the commenter you were replying to.