I seem to only have this on ESO, no other games that I could see. I sometimes would see it in Fallout 4 against the night sky barely. But it's a faint black grid that is noticeable in the blue sky. I thought it was maybe reshade that I started using today (filmic mask makes it worse) but after uninstalling everything, it persists. I went to Summerset and it disappeared for a minute, I move around and it pops up, I go back to Auridon and it's bad again.