I am seeing shadows tha start outwith smooth edges become horribly pixelated and then the shades pixels start to roil/boiling into large blocky squares with jagges edges. I alao notice that he entire screen will oscillate in brightness some time when I run, but not when I sprint. If I sprint and then slow to a run, the brightness stays constant.

Everything is maxed out.

My stats

i5 2500k
Asus Gtx580 cu ii
Asus p8z68 Pro
Intel SSD

Monitor, Asus VE278Q

latest non beta Nvidia drivers
Windows Update complete

Overall, the runs "ok" if a bit alow framerate and with terrible textures and subpar polygon counts. My biggest gripe however is the heavily pixelated and boiling shadows.