It's annoying when the FireStick audio out of sync. Whether it's a slight delay or a bigger lag, it can ruin your viewing experience. Fortunately, in this guide, we'll explain why audio sync issues happen and show you straightforward steps to solve them, then you can get back to enjoying your content smoothly.

Why Is My FireStick Audio Out of Sync

Audio out of sync FireStick can stem from a variety of causes, including a minor glitch in the media, the app you're using, or even the streaming device itself with outdated apps or older versions.

Additionally, FireStick's Dolby Digital setting has also been linked to sound sync issues. If you connect your FireStick to a secondary device and wirelessly cast content, this can lead to audio delays as well.

How to Deal with FireStick Sound out of Syn

Before taking your device into the shop and paying for expensive diagnostics about Insignia TV audio out of sync, try the following things and you could save yourself a bundle.

Way 1. Use the AV Sync Slider Settings

When your FireStick sound out of sync, you can try the method that Amazon officially recommended first to use the AV Sync Slider.

AV Sync Tuning option on FireStick

Step 1. Go to Settings on your Fire TV > select Display & Sounds > Audio > AV Sync Tuning.

Step 2. When audio and video are in sync, every bounce of the on-screen ball happens at the same time as a flash and a click tone.

Step 3. Press the Right button if the click tone happens before the flash, and press the Left button if the click tone appears after the flash. Finally, press the OK button on your remote to apply the changes.

Tips: You can leverage the Fire TV Stick remote app from BoostVision if your remote neglects your commands. Once the application uses the same wireless network as your Fire TV, you can adopt it to control your streaming device with these on-screen buttons.

Fire TV remote app from BoostVision

Way 2. Do Some Settings from the Program or Movie

The program or movie may be the potential culprit of the sound out of sync on Firestick 4k. You can make some settings from the channel that are coming with this problem.

  • Suppose you are watching films in foreign languages on Fire TV and most of them will play the English dub version by default. In that case, you can try to select the original language from the Audio, Sound, or Language settings to resolve the lag problem.
  • Force the app or channel to rematch the audio with the image by forwarding and rewarding the progress bar.
  • Restart the show or movie by returning to the Home menu and then replay the show to see if the problem is gone. Or you can select

    • Settings>Applications>Manage Installed Applications> choose the app and clickForce stopoption then open it again.

    Fore stop option on a program
  • If the content you're watching has an error, it might cause the audio sync issue. Try playing another show or movie within the same app to check if the problem lies with the specific media or if the app itself is causing the issue.

    • Way 3. Restart Your FireStick

    If the above checks can't detect the reason for Insignia Fire TV audio out of sync, please power cycle your Amazon streaming device.

    Select and Play buttons on the remote

    You can press the Select and Play buttons on your remote until your FireStick turns off. During the restarting process, your device will restore some minor glitches automatically, which may help to solve the audio out-of-sync issues.

    Way 4. Update the App and the Amazon Device

    Additionally, you can update the concrete app or your device to settle the Fire TV audio delay. Here are the detailed update instructions.

    Update option on FireStick

    Step 1. Press the Home button on your remote and navigate to the gear icon to expand the Settings menu.

    Step 2. Choose My Fire TV > About > Check for Updates. If there is no last option, skip to the next step.

    Step 3. Click the Install Update option and wait for your FireStick to finish the updating process. (If the option is unavailable, your FireStick is the latest version that doesn't need to be updated)

    After learning how to update your streaming device, let's have a look at how to update the apps on your device.

    Apps section on FireStick

    Step 1. Hold and press the Home button on your Fire TV remote and choose the Apps section.

    app menu on FireStick

    Step 2. Highlight the app you want to update and press the Menu button on your remote.

    open option on FireStick

    Step 3. Select the More Info option and the Update option if available. If you just see the Open option, then this app can't be updated because it's the latest version.

    Way 5. Clear the Cache of Fire Stick

    Refreshing your device's cache can also fix many app issues, including the Amazon Fire TV sound distortion, and help it run better.
    Clear app cache option on FireStick

    Step 1. Choose Settings on the home screen and open Applications > Manage Installed Applications.

    Step 2. Select the app you want to clear and follow the on-screen instructions to clear its cache.

    Way 6. Cancel the Settings that Affect the Sound

    There are some voice-related settings on Fire TV, involving in the Dolby Digital Plus, Dialogue Enhancer, and Volume Leveler. You are allowed to disable these settings to figure out Amazon Fire Stick delayed sound trouble.

  • To disable Dolby Digital Plus:

    • Settings>Display & Sounds>Audio>Dolby DigitalOutput>Dolby Digital Plus Off. - To disable Dialogue Enhancer and Volume Leveler:

    Step 1.Settings > Display & Sounds > Audio.

    Step 2.Audio > Surround Sound > Best Available.

    Step 3. Back to Audio > Advanced Audio > Volume Leveler > Off.

    Step 4. Back to Audio > Advanced Audio > Dialogue Enhancer > Off.

    Note: The operating process may vary depending on the specific Amazon Fire TV device. So if you can't find the corresponding option, please check your user manual or contact Amazon Fire TV support.

    Way 7. Reset Your FireStick

    Once the above methods can't work for you, try resetting your FireStick to its default settings. This will clear all of the changes you've made since you initially set it up and could fix the audio issues you're experiencing.

    Reset option on FireStick

    Navigate to Settings > My Fire TV > Reset to Factory Defaults.

    Closing Words

    Armed with the information contained in this blog, nothing will now stop you from restoring the FireStick audio out-of-sync issue. Hoping this post can help you resume the wonderful viewing experience!

    FireStick Audio Out of Sync FAQ

    Q: How do I fix the sound delay on my Firestick?

  • Use the AV Sync Slider settings
  • Do some settings from the Program or movie
  • Restart your FireStick
  • Update the app and the Amazon device
  • Clear the cache of FireStick
  • Cancel the settings that affect the sound
  • Reset your FireStick

    • Q: Why is my Firestick out of sync?

    Audio out of sync FireStick can stem from a variety of causes, including a minor glitch in the media, the app you're using, or even the streaming device itself with outdated apps or older versions.

    Additionally, FireStick's Dolby Digital setting has also been linked to sound sync issues. If you connect your FireStick to a secondary device and wirelessly cast content, this can lead to audio delays as well.