Then again, NVidia drivers seem to have been pretty broken lately. Seems like NVidia makes more optimized (faster) drivers, but they have compatibility and stability issues.

Seems to be a calculate strategy to shift the entire PC gaming spectrum to its side (since they already do it on next generation console gaming), if what that feature claim to do actual does, well most programmers will use it to enhance their games (performance, visuals quality, etc). Although Nvidia its quite strong on mobile devices, so I don't think they bother to use it, for what I read, they prefer put all their efforts and money in that sector.