Penumbra Black Plague Scrolling graphical glitch

[cake :3]

I am having the same problem with Amnesia.... Even though our graphics card are different i think the problems source is one. i have a geforce 9600 gt. Strange as it seems it not only happened me with amnesia and penumbra series i also experienced this graphical issue with Killing Floor but with none other games. Im starting to doubt my graphics card, but changing it is the last thing i wanna do. :/

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Thanks it solved the problem <3