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To fix Firestick audio sync issues, quickly restart the device (Settings > My Fire TV > Restart) or adjust the audio delay using AV Sync Tuning found under Settings > Display & Audio > Audio. Other solutions include changing surround sound settings from “Best Available” to “PCM,” clearing app caches, or ensuring the TV is in Game
This video demonstrates how to access the AV Sync Tuning tool to fix your Firestick’s audio:
Common Fixes for Firestick Audio Issues:
- AV Sync Tuning: Go to Settings > Display & Audio > Audio > AV Sync Tuning. Use the remote to align the bouncing ball with the audio tone.
- Restart Firestick: Often resolves temporary audio lag.
- Change Audio Settings: Go to Settings > Display & Audio > Audio > Surround Sound and change it from “Best Available” to “PCM” or “Dolby Digital”.
- Force Stop Apps: If the issue is within a specific app (e.g., Netflix, Prime Video), go to Settings > Applications > Manage Installed Applications > [App Name] > Force stop.
- Clear Cache: Within the same Applications menu, select “Clear cache”.
- Check TV Settings: Disable any “motion smoothing” or “audio delay” settings on your TV.
- Use Game Mode: Enabling Game Mode on your TV can reduce input lag that causes audio to appear out of sync.
- Update Firestick: Go to Settings > My Fire TV > About > Check for System Update.
This video explains how to adjust the audio settings for a better, more synchronized experience:
If these do not work, try disconnecting the Firestick from the HDMI port and plugging it back in, or try a different HDMI port.