Did you recently buy a HD card or did you recently make a major driver update? Did OVerture or Black Plague run without any of these problems at some point?
I changed from another driver, to the newest. To be honest I don't know if it happened when I updated the drivers, but the card is quite old. Probably around 7 months. I think I used an X1900XT when I played penumbra perfectly.
Is there anything else I can do other then downgrade?