hi @Dormikon ,
The minimum requirement for hardware are described at UEFN/Fortnite work on the UE 5.5 Engine
Hardware and Software Specifications for Unreal Engine | Unreal Engine 5.5 Documentation | Epic Developer Community
Next you need to check that the installation is working
Verify UEFN/Fortniite
These must be “Run as Adminstrator”.
If you are using Epic Games Luncher you must start as “Run as Adminstrator”.
Check that your Project path is NOT on OneDrive, but on a local drive
The important thing to check is that your project Island Setting do not have DX12, Nanite, or Lumen enabled by default in you custom island.
Try and start UEFN if this works. The take a backup of of your island and import your custom island into UEFN.
Open select the Feature templates and select
“Introduction to UEFN” and the select create Make sure the path is NOT contain OneDrive
This MUST be on a local drive
Launching this island will call the Validation and Memory checker, before trying to load the custom island into Fortnite and you could possibly see the reason why, because the project wont pass validation
This YouTube poster gives lots of help on the lessons on the GTX 1650 lower specification
card.