Well, anything after 314 is a non-event for my 680 SLI setup surround. Games just start to a black screen, geforce experience keeps failing updates, manually cleaning and reinstalling the 331 driver results in the same problem.
Even fucking Terraria crashes if it's not windowed (and State of Decay hard locks the system).
314, everything works fine...
New "features" are fine but not at the expense of core driver stability.