I’ve never done anything with NFS, always had to use SAMBA, but I know you should:
Not have anything mounted in /run, as /run is volatile and not for permanent mounts. Rather use /mnt, that’s what it’s there for.
Don’t have any entries for the drive both in /etc/fstaband a systemd unit for it. Choose 1 option only. I recommend systemd units. Mine works like an absolute charm.