It's stable for me, GTX 770 WIndows 8.1 x64. I've been using it since it released, playing many hours of The Witcher 3 and Battlefield 4 which are notorious for stressing cards to the breaking point. 353.06/12 and 347.88 are stable also, all others are awful. 350.12 crashes EVERYTHING in every possible way. That was the worst driver I ever used. Most people have no issue with it though.