It might be slow, but not boring. Plus, when it picks up, it really picks up. It's beautifuly directed and it's hard to take your eyes away from it.
I love the atmosphere of this film. It all feels wierdly familiar. I can feels the cold air. I can smell the environment. The closing scenes in particular I think will evoke an odd sense of nostalgia in a lot of people. The fact that almost every scene is shot in long takes makes it even more immersive.
It can drag quite a bit at times. With a runtine of almost four hours and a pace so slow it would make Andrei Tarkovsky jealous, it was always going to drag, but it never stops being completely entrancing and heartbreaking.
This is a must-watch.