For some time now I have been aware of a strange black seam which runs across my screen. It seems to hang in the air, and I can even rotate my camera around it as though it were a fixed object. An example can bee seen http://cloud.steampowered.com/ugc/937002995144526767/1D22ACDD48C1306B74D7FCD27CE735FDA3AFC52E/ and http://cloud.steampowered.com/ugc/937002995144520128/01C9E6D8FF28B1BC9B7054B65108AEEB2E56C4CE/. The lines are more noticeable on light surfaces, such as against the character's face and around the hands as spells are cast.
So does anyone know what this? I am unsure if it is a graphics issue or a problem with my enb (Superb ENB). Any help would be much appreciated.