If I change the windows platform to DX11 it can launch fine. It’s strange because creating a Lyra project in 5.3.2 using DX12 is fine on my PC, and creating a new third person project in UE 5.4.1 with DX12 is also fine.
Hard to find out exactly where the problem lies. Has anyone else had any luck with opening Lyra with DX12 in UE 5.4.1?
I opened Lyra on my 1080ti
so it’s unlikely that the problem could be with the videocard. Perhaps resetting the configuration files will help.
I would download a clean project from the EGL and run it to make sure. I would also use a pure engine (without third-party plugins and modifications if you have the Git version)