You will need to hex edit or CFF Explorer edit GardenLife-Win64-Shipping.exe, and replace CreateFile2 with CreateFileW (located in kernel32.dll). So far, I've only been able to get it to work with DirectX 11. For DirectX 12, I tried the patch:
https://github.com/Roti-Poulet/DirectX12On7, But from what I understand, it currently seems difficult to get modern Unreal Engine games to recognize DirectX 12 DLLs. That’s all for now.