.uasset files are still serialized for 5.7. We also deprecated the OpenXR-only sample project. The primary sample now requires the MetaXR plugin and defaults to the Epic Native OpenXR XRAPI. We also began migrating functionality from InteractionSdk.dll to Unreal-based solutions. This migration continues in subsequent releases until the DLL is fully removed.r.Mobile.ShadingPath=0 in the project's DefaultEngine.ini for samples to render properly in packaged APKs. See Epic's article on Mobile Rendering and Shading Modes for more information.