I watched Effie Gray with Emma Thompson, Dakota Fanning and Julie Waters.
I didn't fall asleep. But it is the sort you might. Dark, slow, "atmospheric", moody, slow, quiet, dark, turgid, too serious.
Great acting. Everyone inhabited their characters. Emma Thompson was Emma Thompson. Or a recurrent character she plays. Large. Generous. Kindly. Loud. But that was the character she played. Perhaps she wrote the character in so she could play her usual role.
The story was nuanced. Why did Ruskin not have sex with his wife? Why did he push her towards Millais?
It's also the sort of movie I like watching at home so I can Google details of the central character. Fascinating.