David Martin wrote:
I purchased by D500 in mid-2017, and from the outset I've had a 64GB XQD in the first slot, since it's so much faster than an SD, and I occasionally take burst shots of birds and grandkids. I have a 32GB SD in the second slot just in case I fill up the XQD or the XQD fails, neither of which has never happened.
I have the same size cards, but use the XQD for Raw and the SD for JPG. I have never filled the buffer on the D500.