Inertia – Physical Movement Response System – F4SE v1.2
This mod adds weight-based movement inertia and realistic turn slowdown to Fallout 4, making heavy gear feel grounded with smoother acceleration, harder reversals and believable momentum for more immersive combat.
Required:
Address Library for F4SE Plugins
Introduction
In vanilla Fallout 4, player movement feels highly responsive and game-like, but lacks a sense of physical weight and momentum. Characters can instantly accelerate, stop, and reverse direction without feeling grounded.
This creates a subtle immersion break. Carrying heavy gear should influence how you move, how quickly you can change direction, and how stable you feel during sharp turns.
This mod introduces weight-based movement inertia directly at the engine level. Acceleration and deceleration are smoothly adjusted, and your Carry Weight ratio dynamically affects responsiveness.
Heavier loadouts result in slower acceleration, stronger resistance when reversing direction, and more noticeable momentum. Sharp turns apply a realistic turn slowdown, especially when heavily encumbered.
The system is inspired by modern tactical shooters known for their grounded handling and weight simulation, bringing a more realistic movement feel to the Commonwealth without sacrificing responsiveness.
The goal is not to make movement clunky or artificially difficult, but to restore logical physics behavior and believable player momentum while keeping controls smooth and responsive.
Configuration
The mod is fully configurable through the included INI file located in the F4SE plugins folder.
All gameplay parameters such as acceleration, deceleration, weight influence, reverse behavior, and turn slowdown can be adjusted to match your preferred movement style.
Each setting inside the INI file is clearly described, allowing you to fine-tune the balance between responsiveness and realism. Whether you prefer subtle momentum or a heavier, more tactical feel, the system can be customized to suit your playstyle.
Compatibility & additional Infos
Currently no controller support.
Works only with WASD keys.
More will come.
Installation
Install the mod using your preferred mod manager.
Game Versions available: OG (1.10.163) & AE latest
Uninstall
Any time.
