This is an ancient lesson in software development. IIRC back in the early 1990s there was a beta build of Microsoft Office sent out to early adopters with full

This is an ancient lesson in software development. IIRC back in the early 1990s there was a beta build of Microsoft Office sent out to early adopters with full debugging turned on, and one of them wrote a newspaper review about how slow the new version was, despite the adopter being explicitly told it was a debug build and would be slower. "It's just to show off new features, not new speed."