Because of the latency issue amazon does not officially support connecting your tv and echo via bluetooth.
Fire tv stick bluetooth delay.
The audio delay issue could be due to a bug in the fire tv stick s fire os or just some basic hitch in the device s operation.
It is very easy to install on any device including amazon fire tv stick.
The type and format of content being played could also be a.
Instead if you have a fire tv or fire tv stick there is another option that uses wi fi.
Ipvanish also runs a limited time offer where you can save 57 on your vpn and they allow you to use one account on unlimited devices.
According to him the update improves system performance and brings fixes for bluetooth disconnection and audio delay issues.
At the main menu you will see the my fire tv option present on the extreme right side of the list.
Also it comes with a 30 day money back guarantee.
In the my fire tv you will see about developer options legal compliance sleep restart and the reset to factory defaults options.
Fire os 6 2 6 0 2047291524 guessing this may be issue.
Now select the restart option and it will ask you to restart your amazon fire tv stick 4k.
New fire stick 4k has terrible audio sync delay and will occasionally drop audio altogether for a few seconds.