I've got a very similar noise. I still have 60 days on warranty so I'll take it in just in case the Nissan Tech's think something needs to be repaired. Better safe than sorry. Anyways, here's a video I took an hour ago to document the noise and condition. Also if you notice my engine sounding odd (I think it sounds great aside from injector noise) then please let me know.
https://youtu.be/HPnTNRGNROA