Sorry for the wait, but I've got the logs now. Thanks for the help.
I noticed that the x64 version was significantly smoother than the others, though the FPS was still sub-par. The consistent thing I've noticed as someone who isn't very computer-savvy in the logs is a constantly repeating error message of "Can't find cache for sound !!!! RESOURCE\sounds\ship_bow"
Here are the logs and the save file: https://drive.google.com/open?id=1eMUChRkJoPmeoVFyF9IpEaVF6uTQRox4
EDIT: I've just realized that I only updated the executables and not ERAS itself. I'll get the logs for that as well.