Did you try with landscape box instead of portrait selected? It seems counter intuitive, because the paper is “portrait” oriented, but remember you are telling the driver and printer what to do with the image in relation to the paper size and orientation in the printer.
In Lightroom, the image will appear normal, not sideways, if you have the correct portrait/landscape option checked.
Attached two files, the one where the image is oriented visually correct (landscape box checked) will print correctly. The other one ... oddly enough who knows because sometimes it works fine and sometimes it gives odd results like you are seeing.