Its most likely not older post that is slow. It could just be Facebook or your internet speed and many other things. I suggest clearing your caches and cookies and ...
facebook-slow-to-load-posts
The predominant theory as to why the current Facebook app for iOS is so sluggish is that the app: suffers from its heavy use of JavaScript in a UIWebView .... Jul 14, 2020 — Photos or videos don't load on Facebook? Showing a black box or an empty white box? Avatars not loading? Here are fixes for Facebook not ... 3925e8d270