I'm having some issues with an installation of the Channels app on one specific Apple TV HD in that every single channel including virtual and recorded library content is dropping frames to the extent its unwatchable.
This is only happening on one ATV, none of the others including an identical HD model has this issue and no other apps have this issue, assuming it was either a software fault I've uninstalled the Channels app, reinstalled it, switched video drivers, installed the beta version (slightly better) but to no avail.
Getting frustrated I factory reset this specific ATV and didn't restore from the iCloud backup/layout it so the only app on the device was the Channels app and anything that ships with tvOS. No luck I've switched network cables, switched between ethernet and WLAN, I even switched HDMI cables but again, no luck.
Its probably something obvious but if anyone has any pointers I'd appreciate it, I've had a look at the logs but can't see anything obvious - although I did notice that it was decoding h264 using a software decoder rather than a the hardware because h264 wasn't whitelisted, that wasn't expected but then I don't really know.
Thanks in advance.