Looks like FA's latest update is messing with resolution unless one doesn't cough up the "pay-2-win" fee. So to keep it brief: it looks like the double page pics will likely cease indefinitely. I will have to look at making a test image and seeing what does and does not work, but do not be surprised if only single page pictures get uploaded from now on.

Edit: The test image was done a while ago to see how single page pics were affected (test page is here). From now on only 1 page pictures will be uploaded as 2 page pics will get nerfed beyond belief.