Fallout 4 has just been released and I’ve been stuck fighting a lighting issue rather than raiders due to stretching the game to widescreen, a massive 3440×1440 due to having an LG ultra-wide monitor, the 34UM95. I’m not sure if this happens with smaller 21:9 widescreens notably 2560×1080, but the lighting has been confirmed to break with a resolution of 5760×1080.
This error typically only happens indoors where there’s a lot of shadows and lights within a small area, but it’s incredibly annoying as it takes up a good third of the screen.
I’m not even sure why Bethesda didn’t support ultra-wide monitors in the resolution selection but there are quite a few of us out there with larger unconventional monitors. To even get the game to run in fullscreen on my monitor I went into ‘Documents’ > ‘My Games’ > ‘Fallout 4’ and then edited the Fallout4Prefs.ini fields to this:
The above directory is on windows 7 and may differ if you have an alternate operating system.
Now to fix the lighting. If you’re using an ultra-widescreen monitor with Fallout 4 you’ll have go into the ‘Prefs’ file like above and set:
Here’s some screenshots of the lighting surface that appears amidst some lights:
There will still be a couple of bugs in the game such as the sniper scope image below, but the lighting one is the most noticeable.