Let say we take each of the entangled photons and send one of them to receiver and one to transmitter located light years away. On receiver side photon is passing through double slit and hitting the screen. On transmitter side there is movable light stop placed at the same optical distance from the source as receiver double slit. Without the transmitter light stop, receiver sees interference pattern on the screen, since each photon is free to choose which slit to go through. With light stop the transmitter photons are localized and measured in the plane that corresponds to the receiver slit and therefore localize their entangled partner position determining which slit receiver photon is going through. If my understanding holds this means that there is no interference at the receiver and effect takes place instantaneously. Right ?