In many locations, especially indoors and underground, the floor, walls, and sometimes even character models will have an obviously unintended grid of lines on them.
I have seen this pop up on the forums before, but it was thought to be a texture alignment bug. However some additional poking and prodding shows it to be lighting bug. See in the screenshot how the line bisecting my Asura has a different lighting on either side of it.
Changing shadow, shader, and post processing settings does nothing to change this issue. I have the latest official drivers for my card (Radeon HD 7750) but I recall this issue being around for the past several driver versions so I am not certain drivers will (or could) fix it.
If anyone else is seeing this still, please post your video hardware and drivers so we can see what the pattern might be, if it exists.
