My experience is a bit different. They constantly update it and make it more unusable. At this point it's totally broken. Occasionally I open it, it loads for 30 seconds, I have a notification icon for a post I saw a month ago, then my feed shows the same picture of a guy I follow driving his rally car, which was posted several months ago, then I log off. It's truly bizarre what they've managed to do.
That's back end. With the money they make they could have rewritten the front end so it doesn't have to reload everything whenever you upload an image.