1.3 installed today through steam..

There is a graphical error where the pause menu screen flashes constantly between dim and dark. The game itself seems to be playable. I can move around and can hear the sounds from my footsteps and firing my gun. But there is nothing to see except for a flickering menu.

I troubleshooted every graphical option and it seems to be locked to Anti Aliasing. No other display option reproduces the error.

By disabling Anti Aliasing the flickering screen goes away and game is rendered fine. 2X AA seems fine. 4X and 8X each produce the error.

My Specs.

Core I7 920
6GB Crucial DDR3 1333
EVGA Radeon HD 5870 Factory OC

ATI display driver 11.3 released 3/29/2011

-godeshus

My drivers were up to date, just installed them a couple weeks ago. I reinstalled them, however, and the problem is fixed.

Resolved

-godeshus.