Your whole system is awesome and yes it’s perfect to use UE5, Nanite, and Lumen. Awesome CPU and GPU. Here’s the thing, try doing this: Go to PROJECT SETTINGS, then in the search bar right above type: RHI Then check if DirectX 12 is set, no DEFAULT, OR DIRECTX 11. Nanite uses only DirectX 12 to work from now on said the guys at Epic Games. Here’s a picture I got from one of the users above. I also thank him for this