Had a problem with strange Whiteout effect - https://i.imgur.com/PCE2hVl.jpg
Location : This was in the vicinity of South Boston Police Department / The Gwinnet Restaurant
If you look at Codsworths body area you will notice its raining
The reason I suspected Wetness was because this effect slowly comes on as the rain starts in some areas, the whole screen fades from normal graphics to what you see in the screenshot.
I had a save in this location, and upon reload the rain kicks in, and this effect also fades in.
Turn off Wetness in the game launchers settings and the problem is solved ..
Apart from not being able to use Wetness any more
Graphics Drivers = NVidia 359.00 WHQL
Game beta patch 1.2.33
Machine specs :