What makes more sense?

craps

Made a scene 960 wide X 320 high that will be used with a touch or swipe gesture to pan between two rooms.

The image will be continuous (in its view) so does it make any difference in performance to have two images - each 480 X 320 or one image 960 X 320?

tenrdrmer

If you plan to use Resolution Independence you will need to use 480x320 actors and a 960x640 sized image

If no RI is planned just do one image