Fortnite support DirectX 12 In update v11.20
irextiThe PC version of Fortnite currently requires a graphics card capable of running Microsoft DirectX 11. In v11.20, however, you’ll have the added option to play the PC version using Microsoft DirectX 12!
By using DirectX12, PC players with high-end GPUs may experience a higher and steadier frame rate. This is because DirectX12 delivers better CPU performance and allows for the distribution of rendering jobs across multiple cores.
In the future, we plan on adding features to Fortnite that are made possible by DirectX12. Allowing players to opt into DirectX12 before these features are added will give us valuable information in our development efforts and help us shake out any bugs.
By Epic Games