I’d say 2001 Space Odyssey. The film has its interesting parts but the pace is absolutely awful. It makes it unwatchable. I watched it a while ago and couldn’t finish it. Multiple long dragged sequences showing off the ships where nothing happens. Everything is an excuse to drag the scene, even a goddamn elevator. By the time I got the HAL part I was fed up with it and couldn’t go on. It has multiple parts (starting with the music at the start) where it seemed they had a script but had to have a movie yay long. Like a class film. So they took every opportunity to stretch it.
Some people say I don’t get it because it’s not Michael Bay. That I have to appreciate the art in those long drawn out scenes. Well, excuse me, but I wanted to watch a movie, not a painting. Also, I shouldn’t be expected to be on acid while watching. A disclaimer would help.