I just upraded from the FireTV stick to the new model Fire TV. This is supposed to be able to handle 4K and everything else. However, I am getting frequent audio hiccups while playing 1080p files. My server should be able to handle this and I have tried every other device in the house, with no problem. What can i do to get rid of these skips?
WiFi? Stop using it.
How much of the internal storage is used/free?
How many Apps were started after the FireTV was booted the last time? Restart the FireTV and only launch Plex and test it.