So I used the integer scaling setting in the shader at both axis scaling with a 100% base and auto aspect, and it looked right in gameplay, but not in the FMV (cause the res used by the FMV doesn’t scale in an integer way):
So I used the non-integer scale settings at 100.57% scale and 92.80 offset and adjusted the explicit aspect ratio until the res used was 1825:1344 and then it looked “right” (look at the moon) (the settings seem to change their stepping behavior sometimes, and changing the aspect ratio didn’t put the aspect I selected through selection, only by left and right arrow key stepping) by:
I wanted it to set use a final resolution of 1825:1344 and then scale the content to fit that res, and this achieved that it seems.