Video card not being utilized?

[Overslept]

There is no one point in the game where it starts lagging. If I crank up the settings to max (after clicking on detect), it will being to lag right at the main menu with the torch in the background. I believe this is because my internal GPU is trying to render the menu instead of my dedicated card.

Also, this only is a problem with the normal Amnesia game. When I play the Justine, even on max settings, it runs perfectly like it should at 60+ fps on my GTX 580. Yes, with SSAO