I've tried so many possible settings, but I cant for the life of me get a composition thats 1440x1080 with a PAR of .333 to export into Encore and look good.
The comp looks great in AE. Perfect resolution, but no matter what settings I try when I export:
Video for Windows No Compression 1440x1080 with PAR 1.333
Video for Windows No Compression 1920x1080 with PAR 1
MPEG2 for Blu Ray 1440x1080 with PAR 1.333
MPEG2 for Blu Ray No Compression 1920x1080 with PAR 1
The end result in Encore is a pixellated file that looks like crap and is squished.
Umm, but have you actually build the disc in Encore and checked it externally? There are severe limitations in how Encore handles previews, in particular for BD projects, so the issue may not really be one. The disc may build just fine and be perfectly usable.