That’s the documentation for collecting PSOs manually; what I’ve been referring to is an automated PSO-gathering process that was supposedly introduced in UE 5.1. And part of the release notes for UE 5.2 state that Epic has improved it. Yet you can’t find anything on the Internet on how it works, or how a developer can even tell that PSOs are being gathered automatically.
For all I know, Epic could be lying about the entire thing…though I don’t actually believe that they are. But they haven’t made any information about the automated PSO caching public, which to me is problematic because shader compilation stutter is plaguing games both large and small. Hiding information about the most recent ways it’s been addressed is helping no one.