User:Kelmych/Fallout3 INIs

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Fallout 3 INI Tweak Guide

Template:Notice.

The steps in this part of the guide can be applied at any time. If fINIp has been used previously there is no need to uninstall anything.

INI Tweaks Initial Steps

This guide is intended to be comprehensive, and includes all INI tweaks recommended by for Fallout 3. Users who want more details on the entries in the Fallout.ini and FalloutPrefs.ini files should read at least the first three sections of the Skyrim INI Guide and DoubleYou's forum thread on valid Fallout 3 INI settings. DoubleYou's post includes all the valid entries for the Fallout.ini and FalloutPrefs.ini files. Any recommendations from INI tweak guides or internet forum posts should be ignored whenever they suggest adding entries that are not in the list compiled by DoubleYou.

The following instructions modify the two Fallout INIs: Fallout.ini and FalloutPrefs.ini! These are located in the %USERPROFILE%\(My )Documents\My games\Fallout3 folder. These two files should be backed up now (recommended) or at least prior to the step below that replace these files. If there is a problem later the backup versions allow reverting to the original INI files.

Open Mod Organizer then disable Automatic Archive Validation by clicking the profile button at top, highlighting your profile(s), and unchecking the Automatic Archive Invalidation checkbox.

The first step makes use of the fINIp 3 program. This can be used at any time, but note that it replaces the Fallout.ini and FalloutPrefs.ini files in the %USERPROFILE%\(My )Documents\My games\Fallout3 folder, and will require rentry of any INI tweaks used for Fallout 3 in all of the Mod Organizer profiles that are actively used. The Fallout Launcher runs as part of the installation process when running this utility, so be prepared to redo the entries made previously during the last part of the steps in the Pre-Installation Checklist section of the FO3 guide.

BethINI

Core 

• Author: DoubleYou
• Version: v2.3
• Notes: The Fallout.ini and FalloutPrefs.ini INI configuration files installed with the Fallout game have many errors. This program replaces the existing INI files with versions which include only valid entries. This version includes some Fallout 3 specific changes.
• Fallout NV Equivalent: same program
• Installation:

Download the main file. Run the installer, following the on-screen instructions. Carefully read the warnings. Ideally backups of the original INI files were made before running this installer.
When the new INI files have been created the Fallout Launcher will run to complete the generation of the INI files. Make any changes needed, including ensuring that the screen resolution shown in the Launcher corresponds to the resolution used for monitor being used for the game.
Exit the Fallout Launcher, which builds expanded versions of the INI files.

Copy the new Fallout.ini and FalloutPrefs.ini files to at least one of the .\Mod Organizer\profiles\<Profile-Name> folders, replacing the current versions. The INI files have been changed, so INI tweaks from the Fallout INI and FalloutPrefs INI subsections of this INI subguide then need to be reapplied. When this is complete the same steps can be done for other active MO profiles, or if the INI tweaks are the same for some other profiles the edited Fallout.ini and FalloutPrefs.ini files can be copied to the other Profile folders that use the same INI tweaks. Note that in addition to re-entering the INI tweaks, Archive Invalidation needs to be reenabled for each MO Profile.

Applying the INI Tweaks

For tweaks that affect game performance the potential performance impact is indicated. Create the following at the end of each of the indicated INI sections. Sections are marked by names within square brackets '[ ]', and some of these sections may already exist, but for those that do not, create the section. Carefully check that ...

1. no duplicate entries are created,
2. that all entries are placed into the correct section, and
3. that all sections are properly defined:

Fallout INI

Template:Notice Small Each of the following entries can be pasted directly into the INI (if editing manually). The entry descriptions are commented, so they will not be interpreted by the game at startup. Alternatively, these descriptions can be omitted. The fonts used in the DarNified UI mod are not included in the INI tweaks since they are automatically added at runtime by the UIO - UI Organizer mod.

[General]
 bUseThreadedAI=1   ;often, but perhaps not always, needed in Fallout 3 with multi-core CPUs to avoid a CTD during launch
 iNumHWThreads=2  ;often, but perhaps not always, needed in Fallout 3 with multi-core CPUs to avoid a CTD during launch
 bLoadFaceGenHeadEGTFiles = 1  ;Allow facial morphs from mods to work correctly

[Controls]
;Remove mouse acceleration
 fForegroundMouseAccelBase=0
 fForegroundMouseAccelTop=0
 fForegroundMouseBase=0
 fForegroundMouseMult=0

[Grass]
;recommended changes from ''Flora Overhaul''
;grass size value improves the density and thus the look of the grass but reduces performance
 iMinGrassSize=40  ; increase this to 80 or 140 to reduce grass density and improve game performance if needed.
 iMaxGrassTypesPerTexure=6       ;increase grass diversity with a small cost to performance (yes, 'texure' and not 'texture'),use only with Forested Edition. Use the default otherwise.

[Display]
;intended to improve the effects of lighting when it's dark, from ''Fallout Street Lights''
;installation instructions for this mod include details on how to add these ini settings as ini tweaks associated with the mod vs. adding them here
;they could reduce game performance so if they are used the game performance should be tested after installation
 fLightLODDefaultStartFade=10240.0
 fLightLODRange=10240.0
 fLightLODMinStartFade=10240.0
 fLightLODMaxStartFade=10240.0
 fShadowLODDefaultStartFade=200.0
 fShadowLODRange=200.0
 fShadowLODMinStartFade=100.0
 fShadowLODMaxStartFade=1000.0
 fSpecularLODDefaultStartFade=10240.0
 fSpecularLODRange=10240.0
 fSpecularLODMinStartFade=10240.0
 fSpecularLODMaxStartFade=10240.0

FalloutPrefs INI

[Display]
iMaxAnisotropy=0    ;Anisotropic Filtering - set this to zero, as it should be controlled via the graphics driver.
iMultiSample=4    ;Antialiasing - keep the value set by the Fallout Launcher for now
iSize W=1920  ;replace this with your system monitor width in pixels
iSize H=1080  ;replace this with your system monitor height in pixels

[Grass]
 fGrassStartFadeDistance=18000    ;push back the distance for grasses to fade from 3 to 5 cells (minor performance hit)

FalloutPrefs.ini and Key Bindings

Fallout 3 stores base key bindings in FalloutPrefs.ini , as discussed in this thread; some key bindings are stored in the xml files used for the UI files. The key bindings can be modified in the game, but when Mod Organizer is used this is a bad idea. Mod Organizer does not expect changes in the INI files while the game is running. and won't save the changes using the normal mechanisms. If key key bindings are changed for Fallout 3 it is strongly recommended that this be done with the INI editor in MO before running the game.

Some Additional Informative External Resources

These might also have some useful tips, but note that they have not been updated in a long time and might contain some erroneous material.

• Fallout 3 Tweak Guide (and performance impact)
• The Fallout: New Vegas Tweak Guide

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