Mouse Bug

[sgerstenberg]

I just put the Penumbra series on Steam literally today, I go to start and I notice there's something wrong with my mouse. I can't pick up items when I directly look at them, I have to look way off to the left for the "pickup" icon to show up and then I can pickup the item. This really makes the game frustrating, if someone could please tell me a fix for this problem it'd greatly be appreciated!