So I created a new library, "Movies 4K" and added to Emby on QNAAP no problems, /share/movies/movies 4k and nfs:192.168.1.22/media/movies 4k.
KODI can browse that share and play a movie no issues however, when I try and add that library via the emmby addon, emby complains it can't read the nfs share. I have removed the emby addon, reinstalled KODI, validate the NFS permissions, and I can't address the issue. All other nfs share work fine with native paths even removing add adding back. This happens on the PCs and Nvidia Shield. The only thing that is different is this library was added recently.