User:Kelmych/Fallout3 INIs

INI Tweaks[edit | edit source]

This guide is intended to be comprehensive, and includes all INI tweaks recommended by for Fallout 3.

The following instructions expect the unedited default INIs! If the INI files have already been edited, please delete them from %USERPROFILE%\(My )Documents\My games\Fallout3 and the .\Mod Organizer\profiles\ folder used for the current Fallout 3 MO profile. After deleting them, the default versions can be regenerated by running the Fallout 3 Launcher again (run via MO if using MO). The INI tweaks from this INI subguide can then be reapplied. Template:Warning Small

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 ...

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

Template:MO Note

Some Informative External Resources[edit | edit source]

Fallout 3 Tweak Guide (and performance impact)
The Fallout: New Vegas Tweak Guide might also have some useful tips.

Fallout INI[edit | edit source]

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.

[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

[RenderedTerminal]
;from ''Higher Resolution In-Game Rendered Terminal Text''
 fRenderedTerminalZoom=33  ;enable higher resolution text displayed within in-game rendered terminals
[Fonts]
 sFontFile_5=Textures\Fonts\Darn_Sui_Generis_Otl_13.fnt  ;this added DarN font line FontFile_5 uses the same font as already used for FontFile_6.

[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=3       ;increase grass diversity with a small cost to performance (yes, 'texure' and not 'texture'),use only with Forested Edition

[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[edit | edit source]

[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

[Launcher]
 bEnableFileSelection = 1  ;Allow additional plugins to be loaded

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