Chosen Solution

the sound on my amazon fire stick is distorted but the tv is fine the sound is ok on other inmputs

Firestick settings, audio, Turn Dolby Digital Plus to OFF that worked for me straight away..

I’ve had this problem so I went on audio settings and clicked on surround sound and changed it to PCM and it works fine now.

Sounds working on video but not live tried stereo and best available and Dolby plus switched off

My firestick does the same thing, however, it usually happens after I’ve been watching for about 30 min. I’ll try turning the Dolby off and on. Thank you!