Common Cache is a Known issue with 64Bit devices and/or non-jailbroken devices and is not dedicated to appletv4 but Happens on ios devices aswell - simply deactivate that service addon for now.
AppleTV4/iPhone/iPod/iPad: HowTo find debug logs and everything else which the devs like so much: click here
HowTo setup NFS for Kodi: NFS(wiki)
HowTo configure avahi (zeroconf): Avahi_Zeroconf(wiki)
READ THE IOS FAQ!: iOS FAQ(wiki)