FIX: Fallout 4 Mouse Lag

In this tutorial, learn how to fix mouse lag in Fallout 4.

Fallout 4 PC version suffers from mouse Lag issue but you can easily fix this problem by making a few small edits to the “INI” files. This tutorial has listed below the fix for Fallout 4 mouse lag.

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How To Fix Mouse Lag and Improve FPS in Fallout 4

Step 1. First, close the Fallout 4 game.

Step 2. Navigate to C:\Users\yourusername\Documents\My Games\Fallout4.

Step 3. Locate and open Fallout4Prefs.ini

Step 4. Now you need to change the following parameters:

iPresentInterval=1 to iPresentInterval=0

Also edit:

bForceIgnoreSmoothness=0 to bForceIgnoreSmoothness=1

To be sure, you should also change the iPresentInterval in Fallout4.ini.

For Nvidia Graphics Card users:

Make sure you download Nvidia Graphics drivers latest version for Fallout 4

VIDEO TUTORIAL: How to unlock fps and fix mouse lag in Fallout 4

If you are using Nvidia card, follow these steps below:

Step 1. Go to the Control Panel. Select NVIDIA Control Panel.

Read more: How To Fix NVIDIA Control Panel Missing Problem

Step 2. When the NVIDIA Control Panel window pops up, go to “3D Settings” and add Fallout.exe to your Programs.

There change “Triple Buffer” to ON.
“Max frames render ahead” to 1.
And finally “V-Sync” on.

With the above Settings Fallout 4 runs at Max Settings and FXAA with 80 – 120FPS (120HZ Display) and no Mouselag / Tearing etc (already tested by us). We are running Fallout 4 with a NVIDIA 980 GTX.

Hope something helps you.