The core interaction of your product – Your product exists to save people time or help them solve a problem. Introducing friction or delay during the most important flow of your product will drive people crazy. Notion has developed a reputation for being a sluggish product:
I wanted to love Notion. I did! It’s everything you’d want in a note-taking app. But it’s fucken slow, which made me hate it.
This is why I stick with vim and wiki.vim— This just made me realize I haven’t updated that series of blog posts.