Win 11 PC Audio-Video Out Of Sync On Only One Webpage

Because the delay occurs only on LindellTV and remains in both another browser and a private window, report the affected program or stream to LindellTV rather than reinstalling Windows audio drivers.

Confirm the scope before reporting it

1. On LindellTV, play two or three different recorded programs and, if available, the live stream.
   • Only one program is delayed: identify that program as the affected source.
   • Every LindellTV program is delayed: identify the site player or stream as affected.
2. Test the same program on a phone or another computer.
   • Delayed there too: the evidence points to the stream supplied by the site.
   • Correct on the other device: continue with the local checks below.
3. When contacting LindellTV, include:
   • The exact program title and page address.
   • The approximate date, time, and timestamp where the delay is obvious.
   • Whether audio is ahead of or behind the video.
   • That it reproduces in Firefox, another browser, and a private/incognito window.

Private browsing is already tested, so repeating extension or cookie troubleshooting is unlikely to add useful information. Mozilla’s relevant Firefox procedures include Troubleshoot Mode and disabling hardware acceleration, but those are primarily worthwhile when the failure is specific to Firefox.^1^

If it works correctly on another device

Test Firefox without hardware acceleration:

1. Open Firefox → Menu → Settings → General.
2. Scroll to Performance.
3. Clear Use recommended performance settings.
4. Clear Use hardware acceleration when available.
5. Close and reopen Firefox, then retest.

If the other browser on this PC remains delayed after that change, restore the setting; it is not a Firefox-only problem.

Also test once through the PC’s built-in speakers or wired headphones if Bluetooth audio is currently in use. This separates an output-device delay from the webpage stream.

Use Windows repairs only if the problem spreads

Do not uninstall the audio driver merely for one webpage. If other websites or applications also begin losing synchronization:

1. Open Settings → System → Sound.
2. Select the active output device.
3. Under Advanced settings, set Audio enhancements to Off.
4. Run Settings → System → Troubleshoot → Other troubleshooters → Audio → Run.
5. Check Settings → Windows Update → Check for updates, install available updates, and restart.

Microsoft lists those steps before driver replacement; updating or reinstalling the audio driver is a later fallback for broader Windows audio problems.^2^

References

1. Fix common audio and video issues | Firefox Help - Mozilla Support
2. [Windows 11](https://support.microsoft.com/windows/hardware/audio/fix-sound-or-audio-problems-in-windows#general-audio-troubleshooting-in-windows-11)