Default R6 Sensitivity Multiplier Explained: the Exact Config Numbers and in-Game Proof
To see the engine's baseline math directly, inspect the configuration file that Ubisoft Connect writes to your local storage drive. The game stores your primary parameters in a structured text document called `GameSettings.ini`.
The standard file lives inside your personal Windows directory under the dedicated Ubisoft Connect save path:
`C:\Users\<YourUsername>\Documents\My Games\Rainbow Six - Siege\<Ubisoft-Account-UUID>\GameSettings.ini`
Open this file with any standard text editor and locate the `[INPUT]` block. You will find the following parameters configured out of the box:
ini
[INPUT]
RawInputMouseKeyboard=1
MouseSensitivityMultiplierUnit=0.020000
XFactorAiming=0.020000
The string `MouseSensitivityMultiplierUnit=0.020000` proves the default value. Ubisoft chose this value during the game's initial 2015 development cycle to offer a broad sensitivity spectrum on 400 DPI mice, covering everything from slow arm-aimers to high-speed wrist-aimers across a 1, 100 slider scale.
When you slide your horizontal or vertical hipfire sensitivity adjustment from 5 to 6 in the display menu, the engine calculates the difference as `6 × 0.02 = 0.12` versus `5 × 0.02 = 0.10`. That jump represents a 20% sensitivity increase in a single menu tick. Modifying the text file directly provides the only way to obtain values between those numbers.