thanks to @tassojunior's reminder that it is on Netflix, I just watched it over an early dinner......glad I didn't have to fuss about going to a theater and all....(or should I say "theatre" since it was filmed not in Montana, but entirely in New Zealand??!!)
contrary to others' opinions, I didn't find it slow-moving.....but I can see how some would think so with some moody scenes and little action......when I first took an ice cream break, only 35 minutes remained in the 125-minute movie.....
as suggested upthread and in other reviews, a second viewing will help......though I pretty much got the ending without having to go read the online explanations afterwards, I'll watch it again to catch the important, but subtle, scenes.......
certainly a bit of a dreary movie to some, the scenery, acting, photography, Oscar buzz, and topic are reasons to soldier thru it.....set up captioning if you can!