@kev To be honest, it's not the performance of WordPress that makes me want to ditch it. It's that I'm tired of installing updates so frequently and wrestling with bugs in both the classic and new WYSIWYG editors.
When I can find the time to do more than just maintain, I'm going to switch to something static (maybe https://getpelican.com/ with custom plugins) so I can comfortably write my Markdown in an editor of my choice and know that one doesn't need to update code that doesn't exist.