Apple TV user since ATV2 and just upgraded to 4K 64g puck. Love all the new features, interface options, remote etc. I watch backed up files majority of the time via Ethernet hookup and in doing so clearly noticed an upgrade in clarity and sound! Holy cow was there an improvement over the ATV3! That being said, can anyone tell me why files over 10gig fully loaded on screen is glitching? It will play for awhile, fully be loaded then for whatever start freezing while audio is fine?! Weird issue I never had with the ATV3 (same file & setup) Espesvially when this puck clearly has more power etc. Is there a setting I need be made aware of? Thx for any help you can offer. Frustrating.