Unplayable on high end PC

[imouse]

Hello, everytime i try to play Amnesia TDD it fps lags horribly(fps drops). Tried to play it on lower resolution with lowest possible settings but it's the same. It's steam version, so i tried to verify integrity, delete main_settings and start new game, but it's always the same. The fps drops start instantly after i turn on the game. My cursor lags even in menu.

PC specs:
i5-4570 3.2ghz with auto turboboost(3.6ghz)
gtx660 2gb
8gb ddr3
1920x1080 monitor
win7 64 bit professional

everything has the latest drivers installed. Tried to set high priority but didnt help.

hpl.log here http://pastebin.com/TRDRULdg
Thanks.