There have been reports of games having noticeable frame rate drops when they start to utilize the slow memory area, far above the few percent NVidia claims happen "typically". This might be fixable, either in the drivers or with game patches, but if they don't even publish the information that there is a special case, how are people supposed to work around it?

I imagine that if they had documented this from the start the backlash would have been way smaller, and it leaves people to wonder if problems they have are related to it.