Venus In Furs by Jesus Franco
"Venus in Furs, a masterpiece in supernatural sex..."
I might try it tonight, I hope there isn't too much sex and jazz in it. imdb doesn't even have a "horror" tag for this movie.
Also, on my first imdb search, it lead me to Venus in Fur instead, which is a 2013 movie by Polanski
Might watch this tonight. Not yet sure if it will be Rose Red or Furs and Beyond.
Seen all of those, Triangle is really nice, that is the kind of reality bend I'm talking about. Not just weirdness, but systematic reality deconstruction.