Rendering API Metal MacOS Only { "FFlagDebugGraphicsPreferMetal": "True" } Vulkan { "FFlagDebugGraphicsDisableDirect3D11": "True", "FFlagDebugGraphicsPreferVulkan": "True" } OpenGL { "FFlagDebugGraphicsDisableDirect3D11": "True", "FFlagDebugGraphicsPreferOpenGL": "True" } Direct X 10 { "FFlagDebugGraphicsPreferD3D11FL10": "True" } Direct X 11 { "FFlagDebugGraphicsPreferD3D11": "True" }