Most likely it's just that the newer hardware drivers aren't updated to the software being run, ie your hardware is too new for the software. Developers tend to support the avg user, not the 1% the vast majority cannot and probably never will be able to afford a 30x series of gpu. or any cutting edge tech. Maybe by the time nv bring out the 40x series you'll find the 30x all work perfectly.. but by then you'll have bought a new 40x series and will be complaining it doesn't work as well as expected.