When I play at 2560x1440, 1/4 of my screen is cropped

[itasuke]

Everytime I try 2560x1440 in amnesia, the right quarter of my screen gets cropped and it's the like the screen is zoomed in. but whenever I try another resolution it works perfectly.And this only happens in Amnesia, works fine at every other games.any ideas ?

And in these pictures you can see how it's cropped
https://www.dropbox.com/s/1rc8ucn22tck891/IMAG2029.jpg
https://www.dropbox.com/s/t0b555e0fep68u5/IMAG2028.jpg

and here's my hpl.log https://www.dropbox.com/s/f87fidmsbrruq2c/hpl.log