I can only recall fragments of this film and would love to figure out what it was so I can rewatch it.
The main character had an Asian background, as I recall. At the start of the film we see her waking up or coming to at nights when she is not supposed to and wandering around trying to figure things out. She is surrounded by a lot of other females who look very much or exactly like her, so she's a robot or a clone.
The women work as waitresses in a casino or gaming hall. I think there is a scene where she is aware while serving tables and has to pretend not to be.
Blank. Then action scene where she escapes with the help of someone. I see them running along narrow unenclosed skyways that connect skyscrapers.
My sense is that all of this is at or towards the beginning and there is a lot more plot that comes after.