I searched and found so man different answers on here and other sites so I have to ask. I want to know, if your using a GTX 560Ti and your getting proper PPD (12k+), what driver are you using? 266.66 has been ok but still "crashes" in GPU Tracker V2 and the PPD plummets. Any other driver I have tried doesn't even try to get good PPD, its always under 5k instead of the 12-16k that 266.66 gives me sometimes.