Hm... Yeah, it does.  Of course the waysystems are all messed up and the player shows up in a random position on screen because it's a bigger image than before (but I was gonna just manually fix them), but it's there.  
EDIT: @Machtnix
I did that and that image shows up fine.  But it doesn't fix the issue when I re-import the correct one.
EDIT:  If the limit is 3x 1080, then I guess my image is too large (width is 4000).  Would that be the issue?
1080 is the height. I recommend 2x width of 1920 (3840) only which I believe is 4K resolution.
You will have to make some tests. Try creating some copies of your background & cropping them to different sizes & start from largest size & work backwards until one shows.
Alternatively, split the scene into 2.