Watch the lighting glitch at about 1:40 to 1:43 or so like it was edited or something. The lighting changed.
Those alarms are not flashing in the other room after she goes through the door. So I cant see this being true. Watch that area 1:40 to 1:43 there are no flashes there.
Like the rendering of the floor changes just like in a video game.
Yea that is what it seems like to me.