You can get a more verbose D3D log if you add the command line d3debug
Go to your project Properties->Debugging and add a command argument -d3debug
Make sure the configuration on top is set on those that are active
Also, make sure to remove it afterwards because it will reduce the FPS (though only when running from solution)
I have the same issue BTW and I got the following error
D3D12 ERROR: ID3D12Device::CreateStateObject: Resource bindings for function "RayGen_cd39b89c977a639d" not compatible with associated root signatures (if any): local root signature object: 0x0000021AF52AA730:'Unnamed ID3D12RootSignature Object', global root signature object: 0x0000021A8932F420:'Unnamed ID3D12RootSignature Object'. Error detail: Shader CBV descriptor range (BaseShaderRegister=0, NumDescriptors=1, RegisterSpace=0) is not fully bound in a root signature. If the intent is this will be resolved later when this state object is combined with other state object(s), use a D3D12_STATE_OBJECT_CONFIG subobject with D3D12_STATE_OBJECT_FLAG_ALLOW_LOCAL_DEPENDENCIES_ON_EXTERNAL_DEFINITIONS set in Flags. [ STATE_CREATION ERROR #1194: CREATE_STATE_OBJECT_ERROR]
D3D12: **BREAK** enabled for the previous message, which was: [ ERROR STATE_CREATION #1194: CREATE_STATE_OBJECT_ERROR ]
Exception thrown at 0x00007FFA646ECB69 (KernelBase.dll) in UnrealEditor.exe: 0x0000087A (parameters: 0x0000000000000001, 0x00000035733FBD50, 0x00000035733FDB10).
[2023.04.20-07.53.39:465][167]LogD3D12RHI: Error: ID3D12Device::CreateStateObject: Resource bindings for function "RayGen_cd39b89c977a639d" not compatible with associated root signatures (if any): local root signature object: 0x0000021AF52AA730:'Unnamed ID3D12RootSignature Object', global root signature object: 0x0000021A8932F420:'Unnamed ID3D12RootSignature Object'. Error detail: Shader CBV descriptor range (BaseShaderRegister=0, NumDescriptors=1, RegisterSpace=0) is not fully bound in a root signature. If the intent is this will be resolved later when this state object is combined with other state object(s), use a D3D12_STATE_OBJECT_CONFIG subobject with D3D12_STATE_OBJECT_FLAG_ALLOW_LOCAL_DEPENDENCIES_ON_EXTERNAL_DEFINITIONS set in Flags.
UnrealEditor.exe has triggered a breakpoint.