Fallout 4 (FULLSCREEN FIX WORKS 100% JULY 2020) - YouTube
How To Fix Fallout 4 Resolution Bug On Windows 10? [SOLVED]
Full screen DSR resolution scaling fix (Fallout4 and Skyrim LE SE also Witcher3) at Fallout 4 Nexus - Mods and community
Bethesda Support
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. :