Fear soft shadow problem
 

ok first here my spec:

Athlon 64 X2 dual core 4200+
2g RAM
Nvidia GeForce 7900GT 256mb
(have the 91.47 driver)

I can play fine FEAR on max setting with soft shadow off with really no frame rate problem or anything

but I just found that soft shadow doesn't work with FSAA in this game (XD) so i decided to check how it would look and play with the soft shadow feature. Well it doesn't work really well... first the frame rate drop a lot and I get all sort of artifac, like the shadows are all over the place and not where they're suppose to be...

so all I want to know if it's a known issue with my graphic card or something, because I don't recalled having this issue with Oblivion (I not sure if it use soft shadow)