Yeah yeah I know, there's defo a Perfect Blue/Black Swan/Inland Empire vibe throughout, yet this was a stunning cinematic experience for me with great tension. So has this plot been done to death now? No. I think we need even more films like this actually.
Had a friend describe this to me as Inland Empire crossed with Audition. I'd argue it is more like a remake of Perfect Blue. Much less satisfying than that sounds as doesn't really come together in a thematically interesting or weird way. Good first half has some vicious scenes looking at the torture directors force actors to participate in. Loses focus in second half with a weird twist that undercuts deeper points.