Weird Graphical PP Bug

[Neosporin]

Tried latest patch?

http://support.frictionalgames.com/entry/70/

Yep, have it installed already.

I've tried turning off post processing and bloom, which shows this:



Notice the lack of lighting along the top

Any the following is a screenshot of bloom disabled, but post processing still on:



I don't know if it is of any relevance, but the game seems to be locked at 60 fps even with vsync disabled in the Nvidia CP as well as in the game

Thanks for the help!