To activate ShadowPlay Highlights in Fortnite Battle Royale, you’ll need to update to the Fortnite ShadowPlay Highlights patch on January 10th, and have GeForce Experience 3.12 and our new Game Ready driver installed. Once everything’s ready, launch Fortnite and select Battle Royale. GeForce Experience will ask if you wish to enable ShadowPlay Highlights - after you click "Yes", Highlights will automatically be recorded without any further input.
At the end of your match, select the “Highlights” button on your lower right. This will showcase the Highlights captured, and from this screen you can select which Highlights to save to your Gallery, and which to share immediately to Facebook or YouTube.
For further details check out our Fortnite ShadowPlay Highlights announcement article.
Introducing New Ways To Customize, Capture and Share Your Gameplay
At CES 2018, the year's biggest tech show, we've announced new ways to customize, capture and share your gameplay using GeForce Experience. The most exciting of these is NVIDIA Freestyle, which enables you to apply real-time post-processing filters that change the look and feel of supported games.