I cant find it either… 
Button aint there bro…
so… when can we have the disable window blur button back?
As with many things that have been removed from the game over the years (including but not limited to CQ, jukebox, agent finder, blur switch and so on), the answer is: You don’t want that, you think you do, but you don’t…
“If you have Medium or High Shader quality you can now turn Window Blur on/off.”
Yes, but my Shader Quality is set to High, and there is no option to turn window blur off. :\
Maybe you could hire a space janitor who cleans your windshield every now and then so you can have a non-blurred view. 
FIX THIS NOW
FIX THIS NOWFIX THIS NOW
FIX THIS NOWFIX THIS NOW
FIX THIS NOWFIX THIS NOW
FIX THIS NOWFIX THIS NOW
FIX THIS NOWFIX THIS NOW
FIX THIS NOWFIX THIS NOW
FIX THIS NOWFIX THIS NOW
FIX THIS NOWFIX THIS NOW
FIX THIS NOWFIX THIS NOW
FIX THIS NOWFIX THIS NOW
FIX THIS NOWFIX THIS NOW
FIX THIS NOWFIX THIS NOW
FIX THIS NOWFIX THIS NOW
FIX THIS NOW
CHECKBOX HAS RETURNED
WOOT!!!
hi ccp… when you want fix it for pinned windows? wtf…