hi
tested on 32.00 and still works. ADD -d3d11 -sm5 -DDC=None
- Open the Epic Games Launcher.
- Find the UEFN tile in your library.
- Click the three dots below the tile.
- Click on “Manage”
- Slide the button for Additional Command Line Arguments to on.
- Type: in the box. ADD -d3d11 -sm5 -DDC=None
- Launch UEFN.
- Note: In order to switch back to DirectX 12 you need to delete the command/slide the button to
Fortnite Ecosystem v32.00 with Known Issues - General / Announcements - Epic Developer Community Forums
There is another fix that might help
UEFN Crashes Seconds After Opening - deleted my AppData GameUserSettings.ini file