stg83: Ok, I did some reading on Nvidia Gameworks and according to the
Anandtech article Metal Gear Solid: Ground Zeroes is not using Gameworks so I was mistaken about that. While The Witcher 3 is definitely on the list for using some Nvidia Gameworks specific features so there is cause for concern.
That being said Metal Gear Solid: Ground Zeros performance difference in FPS is due to driver issues (again) and has nothing to do with the game itself which is optimized really well, as can be seen from this recent Performance Benchmark comparison between Nvidia and AMD GPUs.
http://www.hardwarepal.com/metal-gear-solid-v-ground-zeroes-pc-benchmark-performance/
Shadowstalker16: That's a relief. And as seeing from the article you linked, it seems we won't be able to tell if the technologies would interfere or not with AMD cards, even if PhysX and other effects are disabled. But I still feel kinda sad that AMD had similar but better TressFX hair simulation back in Tomb Raider 2013 and it worked well on both Nvidia and AMD. And hope of Mantle support goes down seeing no other NGW games support it; and only Crytek showed interest in the past. Was surprised to find BL:TPS on the list. I'm happy to report it works very nicely on my PC, which lacks any Nvidian or Intel bone in its construction. So lets summarize what we know:
1.NGW is a set of technologies which improve the visuals of a particular kinda such as AA or cloth textures. It will consume performance to render those effects. If the game is properly optimized, it''l run fine, like The Crew :
http://gamegpu.ru/racing-simulators-/-gonki/the-crew-test-gpu.html 2.Most NGW effects can be turned off like PhysX and hence reduce performance impact.
3.The catastrophic AC:U seemed to use NGW tesselation, and none other used it. Leads me to believe it has something to do with the performance issues, since neither FC4 or TC ran so poorly. TW3 doesn't use NGW tesellation; sigh.
4. TW3 uses HairWorks, HBAO+, and PhysX; all of which have been used by lesser-dedicated developers and still worked properly.
5. The only new NGW techs that TW3 uses are destruction in environments and clothing textures. Clothing textures can easily be turned down to increase performance from what we know.
6.The only thing worth worrying about is destructible environments, but owing to its similarity to PhysX, which worked well in Borderlands:TPS (it does, personally verified), we can remain positive that Gearbox used it efficiently, so CDPR can do it as well, but probably better.
=stop panicking people!
I am still panicking, though...