This topic has been updated with a QFE for 5.1 to fix multiple issues with Mac builds in UE 5.1:
- Removed Apple Silicon from default build architectures if installed from Epic Games Launcher, as it is not yet supported in UE 5.1 as a default option.
- Apple Silicon native build will be available in UE 5.1 through Epic Games Launcher at a later time, but for now please build from GitHub
- Fixed a Mobile Preview crash on Mac when Mobile Deferred is enabled and Preview Rendering Level set to iOS Shader 3.1
- Fixed issue that was preventing movable lights from properly casting light on Mac