BioShock Infinite - Tweak Guide

BioShock Infinite★ 5 · 647 ratings23k views784 favorites1 min readby AngelGraves13Updated Dec 20, 2025View on Steam ↗

Locating BioShock Infinite's Config Files

You will need to locate your XEngine.ini, XUI.ini and XUserOptions.ini to make the necessary changes mentioned in this guide. A simple search should locate the necessary folder.

%USERPROFILE%\My Documents\My Games\BioShock Infinite\XGame\Config\

XUI.ini

Enable GUI Scaling
* Change MaxResolutionUpScale to 1.0

OFF "MaxResolutionUpScale=0.0"

ON "MaxResolutionUpScale=1.0"

Unscaled Gameplay Menu

Scaled Gameplay Menu

Unscaled HUD

Scaled HUD

XInput.ini

Reduce Mouse Sensitivity
* Change the value to desired amount. I found 50 to be a better value than the default of 60.

[Engine.PlayerInput]
MouseSensitivity=50.0

XUserOptions.ini

Reduce Mouse Sensitivity
* Change in-game Mouse Sensitivity Slider Values
An overall good fix if your mouse is too fast and the minimum option isn't low enough

[XCore.XUserOptionsManager]
MaxMouseLookSensitivity=0.250000

Enable 90 Degree FOV
* Change in-game FOV Slider Value to MaxUserFOVOffsetPercent=28.570000.

MAX "MaxUserFOVOffsetPercent=15.000000"

MAX "MaxUserFOVOffsetPercent=28.570000"

In-game Slider at MAX with 15% offset

In-game Slider at MAX with 28.57% offset

XEngine.ini

Reduce Stuttering
* Change PoolSize to Larger Value
[TextureStreaming]
PoolSize=2048

Enable Max Quality Mode
* Change bUseMaxQualityMode=False to bUseMaxQualityMode=True
This setting will produce the best visuals in-game and sets all shadows to 4096 resolution.

Enable Floating Point Rendering
* Add FloatingPointRenderTargets=True to [SystemSettings]
Renders the Image more accurately with floating point precision. Useful for all Unreal Engine games.

FloatingPointRenderTargets=False (Default)

FloatingPointRenderTargets=True