Peacock TV updated their app last week and the new version is, unfortunately, causing issues on Amazon Fire TV and Firestick devices. Several users that sideloaded the app are reporting there are occasional audio issues, such as the audio cutting, specifically after ads stop playing. Another issue that seems common with this latest release is that ad breaks are starting too early and cutting off a bit of the content being watched.
Peacock TV isn’t officially supported on Fire TV devices yet, which is why you must sideload the Peackcock app. Normally, that means you’re on your own with issues, however, Peacock is actively telling their customers with Fire TVs to sideload the app, so there is a bit more expectation of support than usual. That said, there is little one can do to fix core issues with the app, such as these. I’d normally suggest rolling back to the older version of the Peacock TV app, which was released in February 2021, but Peacock deliberately blocks old versions of the app from accessing content, so you’re forced to use the new version.
The latest update to the Peacock TV app seems to have added support for surround sound to select devices, so that may be the root cause of these issues. If you’re having audio issues, one thing you could try is disabling surround sound decoding on your Fire TV. This is done by going to Settings > Display & Sound > Audio > Surround Sound and selecting the second option. The option label varies by Fire TV model and software version, but it should be labeled as “PCM” or “STEREO.” Making this change will, obviously, affect the audio across all of your Fire TV apps and I don’t know if it will help fix Peacock’s issues, but it’s worth a shot.
I’ll be keeping a close eye to see if a new version of the Peacock TV app is released. I don’t have high hopes on it happening soon, since the last update took 3 months to be released, but I’ll add the next version to my guide on updating the Peacock app as soon as a new version becomes available. In the meantime, feel free to chime in below in the comments if you figure out anything about this issue that might help others.