I have a Nvidia GTX 560 (non Ti), crysis 3 will only let me use two resolutions: 1176 x 664 and 1280 x 720. im wondering why i cant change the resolution to 1920 x 1080. i've re-installed it but still didn't fix it? can anyone help?

This is alpha related, please see this thread:
http://secure.gamesas.com/forums/viewtopic.php?f=58&t=52310

EDIT: It might be your drivers