Weird dark lighting bug

[Apothecarius]

Disclaimer: I am not using ANY visual mods at all, and this just started happening all of the sudden.

https://imgur.com/OGu0ngS

Using my pip boy light or headlamp makes it go away, but I have no clue why this is happening.

[Dave]

There is a lighting glitch where if you face a certain direction then things go dark. If this is the case then In Fallut4prefs.ini either change or add the line

bComputeShaderDeferredTiledLighting=0

[Apothecarius]

Originally posted by Dave:

There is a lighting glitch where if you face a certain direction then things go dark. If this is the case then In Fallut4prefs.ini either change or add the line

bComputeShaderDeferredTiledLighting=0

Unfortunately the problem still persists, however I've deduced that the main thing causing this is something to do with the green glowing fungus. Every time I've seen this, it's happening at where they are at or around them.

[Dave]

Originally posted by Apothecarius:

Originally posted by Dave:

There is a lighting glitch where if you face a certain direction then things go dark. If this is the case then In Fallut4prefs.ini either change or add the line

bComputeShaderDeferredTiledLighting=0

Unfortunately the problem still persists, however I've deduced that the main thing causing this is something to do with the green glowing fungus. Every time I've seen this, it's happening at where they are at or around them.

Well it is a lighting issue as the fungus should emit a light source around it and create shadows.
1 Try changing your shadow quality in the game launcher menu, just as an experiment.
2 Try using NAC or ELFX mods to see if it rectifies. There may be an existing mod which causes this and by removing it may mean you have to start a new game but adding a light FX mod will correct it and allow you to continue. I think Easy Homebuilder is one that can create shadows but has side effects disabled or enabled for example

[XXLLRRTT]

Above answers are incorrect. This has something to do with light fade parameter. It can happen in two ways:
-light fade base value is too low
-light fade correction in particular cell is set too low
Fix: check if any mod modifies Light records or edits light fade in porticular cell