Last night I watched the A24 movie, The Green Knight. It was moody. Talking with my spouse the closest to other films I seen with a similar feel would be Pan's Labyrinth.
It's slow. Moody. I dunno if arty is a good word but it feels correct.
In any case I enjoyed. It's on my buy list for later.
No onto how it deviates from the source material the alliterative poem Sir Gawain and the Green Knight. It does deviate. But to me that is a good thing. Better something different inspired and looking at something old than yet another slavish recreation of the old just with better sfx.
Now I am not a great scholar in general, or even a great one on Arthuriana or even specifically SGGK; however, I've read about a dozen different translations of it and multiple essays examining it. I don't remember how long ago the last time I read it was, probably a few months ago.
This film to me speaks to the same fictional events that the poem is portraying. Both differ from each other just as much as two different dramatic portrayals of the various wars throughout history are. And I believe the film itself speaks to that, directly if subtly.