You can probably try this but im not sure if it helps. You can go to the C:users/"yourusername"/.prefsI thought about it too, but every time I'm trying to change resolution, games goes to window mode, and game is still pixilated or image is so big game just unplayeble. I hope I can change it within game directory, but probably I just need to upgrade my monitor, or my whole computer really.
it contains a file "tales-of-androgyny-preferences" it is a XML-file so you can use any notepad or similar to modify it and change the Height and Width to same as your monitors.