Since updated, everything else is fine but game screen started to black out intermittently when there's many things going on in the screen.
For instance, I use stealth mod and try to slide at the same time (therefore there is new HUD goggle blur effect and change from normal view to nanovision going on, the screen became dark for a few second and I can't see a thing.)
And when there's multiple explosions on screen, I get black screen for a few second and it came back to normal.
Before 1.8 patch where I have no special goggle effect (getting slightly defered vision of things when I start to run or slide) , I didn't have this issue.
I have changed some graphic options as turning off motion blur, radial blur and EdgeAA and PostMSAA.
also changed FOV to 75 movement FOV 75.
Can you verify this issue why this is happening and fix this?