Over 2 years later, and I still cannot play in fullscreen mode. The game either doesn't start, or flickers from black screen to title screen so fast that i cant do anything. :
Fallout 4 stuck in windowed mode :: Fallout 4 General Discussions
Widescreen Gaming Forum • View topic - Fallout 4 21:9
Fallout 4 crashing on startup [Fixed]
Fix Fallout: New Vegas Crashing on Windows 10 & 11 [Tested]
Resolve all Fallout 4 Errors on Windows 10 [Gamers Fix]
8 Solutions to Fallout 4 Long Loading Times on Windows 10