Ambient Occlusion not working properly

etez

If Shader quality: Very high or Max, and MSAA anti aliashing turned on, the ambient occlusion lost its effect on walls,plants, and big objects, but remains on characters and smaller objects.

Screenshots:

MSAA: On, Shader quality: High, Ambient Occlusion: On
Screenshot 1
Screenshot 2
Screenshot 3


MSAA: On, Shader quality: Very high, Ambient Occlusion: On
Screenshot 1/2
Screenshot 2/2
Screenshot 3/2



Computer specs:
AMD Phenom 2 X4 955
AMD HD 7790 1GB, With the latest 13.4 driver.
Windows 7 64 bit

niteforcee

no solution?