Turn off closed captions (CC) on the Youtube player interface

Check your accessibility settings. Maybe text to speech assist is turned on.

yr box is chinese version, can't do astrogo.

astrogo will work only on those with androidtv os.
u must be mistaken.

subs (text) hv no audio.

if the original audio is eng, of course u hear the voice same as eng subs!

if u only want to read subs, u set tv audio to zero!