In my modest opinion I think this film is uneven. The acting not very good. It seems forced somehow, like when the couple first get to the party the greetings seem overdone and forced. Not natural at all. That's just a for instance as there are many more scenes that seem that way the bathroom scene with the overdosing nude girl for another example. I think if the movie wasn't directed by Stanley Kubrick it would not be as well reviewed or received as it is.With this cast and a year and a half to make I expected a coherent story, good performances etc. I expected more, much more.
And don't get me started on the just plain weird goings-on at the costume rental company and let's not forget the cheesy sex cult. When I read it took Kubrick and company a year and a half to make this movie all I kept thinking was what in the world were they doing because it certainly doesn't show on screen.