second video:
http://www.youtube.com/watch?v=vp8BSrURxlE&feature=em-upload_owner

Set game in "Full screen windows" and the game start with vsync working properly, it is a temporary solution.

finally having solved the problem of compatibility between steam - sweetfx - msi afterburner and radenpro I managed to get them to get along with the correct parameters, now I did some testing with the with RadeonPro, if in game is enabled the vsync and enabled the option you see in the image below that resolves the problem of vsync, and it working properly since the first start in fullscreen mode, I think you should analyze how an external program fix the problem by integrating the solution directly in the game.

http://img90.imageshack.us/img90/410/8ano.jpg

video here:
http://www.youtube.com/watch?v=KOy-8cwtj54

update: I have the same problem with windows 7 and geforce 550ti

NEWS:
When I start the game in full screen I have this problem, but if I go to the desktop and return to the game (alt + tab), the vsync starts to function properly, starting the game directly in the window mode the vsync works properly from the start, I believe that the problem is in fullscreen with windows 8, because I noticed that in full screen changes the maximum frequency, this also happens in other games, rather than 60hz recognizes 59.94Hz, I think the problem start from this situation, I am aware that on windows 7 this does not happen, I do not know if it is a problem of windows 8 or by AMD drivers, or if for some reason it is rightly so. But I think you should find a permanent solution.

appdata is a hidden folder, write %appdata% in search (in windows start menu) press enter.

Good configuration is in nvidia driver application controlled and in game vsync on, triple buffer in nvidia controll pannel is openGL related, and in DX11 buffer work different, not a triple buffering but other way.

test this:
set in game window full screen and restart, my problem is only in fullscreen, in windows or windows full screen vsync seems work correcly.