help with amnesia: The Dark Descent

[Death Icarus]

well after installing the drivers the game actually opend up and ran, i was pretty happy.
but the game runs to slow to play, even on the lowest settings.

which i find weird, just cause the website, http://www.systemrequirementslab.com/cyri/.
says i meet the min. requirements to play and it hasnt been wrong about a game yet.

and the game on the lowest settings looks pretty bad, looks just like penumbra and this computer runs that fine. so im confused as to why it cant run it smoothly looking that bad.

not that penumbra looks shitty, i love it. just a comparing it