I don't know one way or the other, but any form of compression that discards data is something I'd avoid. So based on that I'd suggest 12 bit lossless would be the way to go. I did a non scientific test one my D810 between 12 & 14 bit lossless, other than file size I couldn't really see any differences. However, like most things it depends on what you need/want and shooting conditions (the more demanding then having more data to work with "may" help).
As frame rates are irrelevant to me, I stayed with 14 bit lossless