When using Metal rendering on VisionOS, several issues related to passthrough and rendering features have been observed. Post Processing effects often fail to render correctly with passthrough, displaying the background color instead of applying effects to Unity scene objects. There is uncertainty about the feasibility of a passthrough-ignoring Post Processing stack for selective effects like bloom or color grading. Similarly, the Visual Effect Graph's compatibility with the Metal rendering path has been a concern, although it appears to be achievable with Stereo RTs. Additionally, accessibility to ARKit and world reconstruction features such as plane detection, image tracking, and meshing seems limited when utilizing Metal. This raises questions regarding the design of sample scenes that include these features, potentially suggesting a hybrid-rendering approach without clear documentation. Furthermore, passthrough functionality through Metal in URP can be hindered by default URP renderer settings. Beyond disabling HDR, it may be necessary to remove the SSAO Renderer Feature from your URP renderer data file to achieve proper passthrough rendering. This requires manual debugging and is not always clearly documented."