Interesting, is your project setup for raytracing? if so let’s disable it:
For raytracing this will be located here:
[YourProjectFolder]->Config->DefaultEngine.ini
under [/Script/Engine.RendererSettings] you should find r.RayTracing=True , change that to False
Can you also try launching under DX11 or Vulkan by setting this variable? And try again with each and see if it stalls?
DefaultGraphicsRHI=DefaultGraphicsRHI_DX12
to
DefaultGraphicsRHI=DefaultGraphicsRHI_DX11
or
DefaultGraphicsRHI=DefaultGraphicsRHI_Vulkan