Fallout 4

Fallout 4

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Desperately need help :( Bad shadow flickering glitch, re-bought game on new account, still doesn't work
So my game was working fine with mods a few months ago, I stopped playing it and now I've come back It has this unbearable shadow/lighting glitch where the shadows quickly appear and then disappear making a flickering effect on every surface.

One by one I uninstalled mods, didn't fix it. Then I tried every graphics setting tweak I could find from forums, didn't fix it. Then I completely uninstalled the game (On steam and manually deleted all local files) and then re-installed it, didn't fix it. Now I've made a new steam account, completely deleted the game, and re bought and re-installed the game on a new steam account so I had a 'fresh' copy, still didn't fix it. I have also tried deleting the fallout4.ini, fallout4prefs.ini, and fallout4custom.ini files following bethesdas' own advice.

I have updated my GPU drivers, and it definitely isn't a hardware problem as my pc works fine on every other game.

I'm completely stuck now and £30 poorer. I just don't understand it. If it's not a problem with the game files, not a mod conflict (I don't have any mods now btw), and it's not a hardware issue......WHAT THE F--K CAN BE CAUSING THIS??????? Even more inexplicable considering I have over 100 hours in the game and never had an issue before.

PLEASE PLEASE PLEASE HELP
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Showing 1-13 of 13 comments
Vul†s Apr 9, 2022 @ 8:31am 
It's a common problem related to Sun update shadows, some people notice it others don't, but it's always been there.

In Fallout4.ini and Custom it has these two parameters: fSunShadowUpdateTime and fSunUpdateThreshold. Set it to 0 and see if it ''relieves'' a little.
richesdaniel4 Apr 9, 2022 @ 9:05am 
Originally posted by Vults:
It's a common problem related to Sun update shadows, some people notice it others don't, but it's always been there.

In Fallout4.ini and Custom it has these two parameters: fSunShadowUpdateTime and fSunUpdateThreshold. Set it to 0 and see if it ''relieves'' a little.


I'll try this thanks. It might have been there before, but never this bad, every surface with a shadow on it is like an actual strobe light lol, but thanks for the suggestion, i'll try it and get back to you
richesdaniel4 Apr 9, 2022 @ 9:10am 
Originally posted by Vults:
It's a common problem related to Sun update shadows, some people notice it others don't, but it's always been there.

In Fallout4.ini and Custom it has these two parameters: fSunShadowUpdateTime and fSunUpdateThreshold. Set it to 0 and see if it ''relieves'' a little.


Nevermind, it didn't work, it's with all light sources not just sun, but thanks for the suggestion though
Sirion Jadie Apr 9, 2022 @ 9:55am 
Try this, it's a shadow disabler. maybe this is an alternative acceptable so you can play without "distractions".

https://www.nexusmods.com/fallout4/mods/37213/
Last edited by Sirion Jadie; Apr 9, 2022 @ 9:57am
Shadowrun Apr 9, 2022 @ 3:08pm 
if the game worked fine then months later it does not then something changed with the system configuration. you said you updated the graphics driver so maybe that was the problem. try rolling back to the previous driver that worked. or maybe the problem now is in your new GPU settings.
funkynutz Apr 9, 2022 @ 3:18pm 
Originally posted by richesdaniel4:
Now I've made a new steam account, completely deleted the game, and re bought and re-installed the game on a new steam account so I had a 'fresh' copy, still didn't fix it.

It's an issue that's always been in the game as Vults mentioned.

A new account won't solve graphical issues in a game. In fact about the only thing a new account will solve, is if you've been previously banned.

I have updated my GPU drivers, and it definitely isn't a hardware problem as my pc works fine on every other game.

HOW did you update your GPU drivers? DON'T use windows update. Also don't use geforce experience if you've got an nvidia card. No idea if the AMD software is any better, but I'd suggest not using that either... Use DDU to nuke your drivers. Reinstall the latest one manually.

I'm completely stuck now and £30 poorer.

Get a refund.
Iron Knights (Banned) Apr 9, 2022 @ 4:53pm 
Yes, sounds like a system setup problem or bad video drivers.
Never let Windows do updates automatically, do go into update settings and un-click update hardware drivers.
richesdaniel4 Apr 11, 2022 @ 5:36pm 
Originally posted by FunkynutZ:
Originally posted by richesdaniel4:
Now I've made a new steam account, completely deleted the game, and re bought and re-installed the game on a new steam account so I had a 'fresh' copy, still didn't fix it.

It's an issue that's always been in the game as Vults mentioned.

A new account won't solve graphical issues in a game. In fact about the only thing a new account will solve, is if you've been previously banned.

I have updated my GPU drivers, and it definitely isn't a hardware problem as my pc works fine on every other game.

HOW did you update your GPU drivers? DON'T use windows update. Also don't use geforce experience if you've got an nvidia card. No idea if the AMD software is any better, but I'd suggest not using that either... Use DDU to nuke your drivers. Reinstall the latest one manually.

I'm completely stuck now and £30 poorer.

Get a refund.


I don't doubt it's always been in the game, but never this severe and on every physical surface. I've got a video of it on my reddit account u/dDan23DJR. It is like a midday rave.

And I updated my graphics drivers by going onto NVIDIAs drivers site, finding the latest driver for my card (3060 Ti) and downloading/installing it. I do have GeForce experience but I've never actually used it, I don't really see the point of it.
richesdaniel4 Apr 11, 2022 @ 5:39pm 
Originally posted by Iron Knights:
Yes, sounds like a system setup problem or bad video drivers.
Never let Windows do updates automatically, do go into update settings and un-click update hardware drivers.

My system setup hasn't changed since fallout worked (although I did uninstall all the mods, but I reinstalled the game anyway), and I downloaded the gpu driver on NVIDIAs website. I even tried installing an older driver from their website incase a new driver didnt agree with the engine or something.
richesdaniel4 Apr 11, 2022 @ 5:43pm 
Originally posted by Shadowrun:
if the game worked fine then months later it does not then something changed with the system configuration. you said you updated the graphics driver so maybe that was the problem. try rolling back to the previous driver that worked. or maybe the problem now is in your new GPU settings.


I did try with an older GPU driver from back when fallout worked and it didn't fix it, and I have restored my global graphics settings in NVIDIA control panel back to standard which should be the way they were for when I first started fallout on my PC (It was my first game and at that point I wasnt brave enough to fiddle with those settings because my PC was new lmao)

Could a newer version of windows have something to do with it? Windows is a bastard for just updating without telling me
Shadowrun Apr 11, 2022 @ 8:23pm 
yes actually, there were several people complaining about updating to windows 11 from windows 10 for awhile but i think windows updated again and it was ok?

is that what you did, upgrade to windows 11? if you wanna see your system specs just go like this: In Steam click "Help" then "System Information".
richesdaniel4 Apr 12, 2022 @ 5:16pm 
Originally posted by Shadowrun:
yes actually, there were several people complaining about updating to windows 11 from windows 10 for awhile but i think windows updated again and it was ok?

is that what you did, upgrade to windows 11? if you wanna see your system specs just go like this: In Steam click "Help" then "System Information".


Nah I just updated my windows 10 to a newer windows 10, didn't know if it might of changed anything.

The game files can't be the problem so something must've changed with my system its self (pure guesswork to come to that conclusion lol)

Off the top of your head, what could just change by its self? I've tried with GPU drivers so it cant be that, other than that though idk
Shadowrun Apr 12, 2022 @ 9:28pm 
well, there was a guy one time that updated a windows file and it solved a game crashing problem for him.

App crash with ntdll.dll
https://answers.microsoft.com/en-us/windows/forum/all/app-crash-with-ntdlldll/9aa59f80-99a1-4f3c-b2f0-7eb72df05b2a

the web page will have to do an update of that particular file. ntdll.dll. it is a file that is much depended upon by fallout 4 in order to run

use method 2:

Method 2: Reinstall the DLL

Type cmd in the search box, and then right click Command prompt select Run as Administrator.
Type this in command prompt:
regsvr32.exe /u ntdll.dll and press Enter key (this will uninstall the file)
regsvr32.exe ntdll.dll and press Enter key (this will reinstall the file).
Let us know how it goes.
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Date Posted: Apr 9, 2022 @ 7:58am
Posts: 13