in the picture you can see some line, thing across the screen, some interuption.. not sure how to call it.
i'm getting this issue a lot when watching videos and sometimes while playing games.
in real time while watching it's more noticable and i don't know what to make of it.
i tried to update the driver, but nothing changed.
i'm using now windows 7 with the latest drivers, and as much as i remember i got that issue with windows 8.1 as well.