: Close Fortnite, press Windows + R , type %localappdata% , navigate to NVIDIA > DXCache , and delete the files inside (skip any that are in use). 2. Optimal In-Game Video Settings
Here is a comprehensive breakdown of the best ways to eliminate stutters in Fortnite Chapter 4. 1. Fix the DirectX 12 Shader Issue
The most common cause of stuttering in Chapter 4 is DirectX 12 shader compilation. When the game tries to recompile these shaders repeatedly, it causes heavy hitches.
: Open your Nvidia Control Panel → Manage 3D Settings → Shader Cache Size . Change this from "Driver Default" to 10 GB .