Nikon released a firmware update 1.02 for the Nikon D500 camera that will fix certain memory Card issues with the Nikon D500 camera. Keep in mind Nikon will soon announce more updates related to fix some issues related to Nikon D500.
Addressed an issue that sometimes caused errors with certain UHS-II SD memory cards. As we were able to confirm that these were read errors arising not in the camera but in the cards themselves, we addressed the issue with a work-around that switches temporarily to UHS-I mode when a card-side error occurs in UHS-II mode. The camera switches back to UHS-II mode when turned off and then on again or when the standby timer restarts. Card-side read errors may still occur after the update, albeit very infrequently.
BTW you can look at some the Best lenses available for the Nikon D750 camera.