When I set screen resolution to 1440x900 resolution, and only at that resolution, all others ok, I Get intermittent sparkly horizontal red lines.
From as little as one to as many as 10 or so, generally occurring mid to mid upper screen.
They temporarily go away if I look in a different direction, then come back when return to forward view.
They are more prevalent in some views than others. Forward and left were the worst, right and back few to none.
Anyone???