While the new CD Projekt Red The Witcher 3: Wild Hunt game might not work well on AMD graphics cards due to possible issues with Nvidia Gameworks, everything works smoothly on Nvidia graphics cards and Nvidia is giving that same game to all GTX Titan X owners.
All current and future Titan X owners need to do is install the latest Geforce Experience, the latest Geforce driver, which give them an ability to click on a "redeem rewards" button in the app and
follow simple steps to get a Steam key for the CD Projekt Red's latest The Witcher 3: Wild Hunt game.
The game is already a part of Nvidia's latest "Two Times the Adventure" game bundle which gives a free code to both The Witcher 3: Wild Hunt and the upcoming Batman: Arkham Knight to future owners of Geforce GTX 960, GTX 970 and GTX 980 graphics card or notebooks with GTX 970M and 980M GPUs.
The Witcher 3: Wild Hunt comes with Nvidia exclusive features like PhysX, HBAO+ and, of course, GameWorks effects which apparently is the main issue why the game does not run that well on AMD Radeon graphics cards.
Source:
Techpowerup.com.