Audio Sync Loss: Possible Audio Driver Issue #2

Quick Answer

Audio sync loss where sound lags behind video or appears out of time is frequently caused by a corrupted or outdated audio driver. Reinstalling or rolling back the driver resolves this in most cases without any hardware changes needed.

Identifying an Audio Driver as the Root Cause

Before updating drivers, confirm the sync loss is actually driver-related rather than a source problem. Plug headphones directly into a different audio port on the same PC. If the desync persists across ports, the driver is the likely culprit. If the desync only appears through a specific port (such as HDMI audio to a monitor), the display driver or HDMI audio controller is the component to target.

Also check whether the sync issue appears in all audio output types or only in specific applications. A browser-based video player uses a different audio pipeline than a local media player or a game. If the desync only appears in one app, the audio driver is less likely to be at fault and the app's audio buffer settings are a better starting point.

How to Reinstall or Roll Back Your Audio Driver

Step 1: Open Device Manager. Press Windows + X and select Device Manager. Expand the Sound, Video and Game Controllers section.

Step 2: Uninstall the current driver. Right-click your audio device and select Uninstall device. Check the box to delete the driver software if offered, then restart the PC. Windows will reinstall a generic audio driver automatically on reboot.

Step 3: Test audio sync with the generic driver. If sync improves, the previous driver version had an issue. You can stay on the generic driver or download the latest official driver from your motherboard manufacturer's support page.

Step 4: Install the latest official driver. For Realtek-based onboard audio (the most common on consumer motherboards), download the driver directly from the motherboard manufacturer's support page for your specific board model rather than from a generic Realtek download. This version is validated for your hardware.

Step 5: If the latest driver still causes desync, roll back. In Device Manager, right-click the audio device, go to Properties, and choose the Driver tab. If a Roll Back Driver option is available, use it to return to the previous version.

Frequently Asked Questions

Will updating my audio driver delete my audio settings?

In most cases your system audio settings (volume levels, default devices) persist across driver updates. Application-specific settings within software like sound mixers may need to be reconfigured.

Can Bluetooth audio cause sync loss even with a good driver?

Yes. Bluetooth audio has inherent transmission latency that varies by codec and device. LDAC and aptX Low Latency codecs reduce this, but wired headsets remain the most reliable option for zero-latency audio in gaming.

My sync loss only happens in games, not in video. Is that still a driver issue?

Not necessarily. In games, the audio is generated in real time alongside frames, and if the GPU or CPU is heavily loaded, audio thread timing can slip. Check GPU and CPU utilisation during the desync. If both are near 100%, performance optimisation rather than the audio driver is the fix.