Since we've been going over the same thing for 40 pages I didn't think it necessary to post yet another wall of text. This has probably been posted a hundred times in this thread, by me and others. But I'll make it 101 for you. Here goes, from the top:
Gameworks is utter crap. Not just because it's proprietary and AMD has a hard time optimizing for it. But because it's completely unoptimized for Nvidia's own customers as well.
It's been shown that Hairworks at 64x tesselation offers
no IQ gain over 16x, while destroying performance on Maxwell/Kepler/GCN.
Hairworks made anything but Nvidia's latest generation unplayable. How is that added value for someone who bought a $650 780 or a $1k Titan?
And why should someone with a 980 be overjoyed that Nvidia's shiny new feature cut their minimum fps in half? If Nvidia was actually worried about "giving more" to their customers they would tweak their effects for optimal IQ/performance ratio, but they don't cause they only care about pushing their new cards.
Nvidia shouldn't be in charge of how well games run on any given hardware, yet Gamework pretty much gives them a slider where they can obsolete cards at will.
Gameworks isn't just bad for AMD customers, it's bad for
everyone.