Black borders - Resolution problem

[ariel__s]

Hi everyone.
So I finally bought Clod some days ago. I gotta say that performance is what I expected, with a pc that is barely above the minimum specs I run it on Low-Mid quality.

There's one thing that is annoying me... while I'm playing there is a black frame. The playable screen is smaller than my monitor, making everything blurry (I'm using native-1080p resolution). On the menus it works perfectly, the problem is while playing. I think it has something to do with my monitor -Samsung Bx2250- because I had the same problem using windows the first time I plugged it. I solved using the Scaling Option on the Catalyst Control Center. I've played lots of games, and this is the first one with this issue. Is there anyway to fix this?

I'm not home right now, so I can't post any screenshot.

I would appreciate any help.

Thanks!