Try these steps in order:
- Restart the Windows audio services.
- Select Start, type services.msc, and press Enter.
- Right-click Windows Audio and select Restart.
- Right-click Windows Audio Endpoint Builder and select Restart.
- Test Netflix again in both the app and Chrome.
- Update the audio driver.
- Open Device Manager.
- Expand Sound, video and game controllers.
- Right-click the audio device and select Update driver.
- Restart the PC.
- If the issue started after a Windows update, roll back the audio driver.
- In Device Manager, expand Sound, video and game controllers.
- Right-click the audio device and select Properties.
- Open the Driver tab.
- Select Roll Back Driver.
- Restart the device.
- If audio or video stutters only when using a Microsoft Wireless Display Adapter:
- Move the PC closer to the adapter.
- Keep it away from microwave ovens, cordless phones, or baby monitors.
- If using a Microsoft 4K Wireless Display Adapter, try changing how the adapter is connected.
- If HDCP was turned on in the Microsoft Wireless Display Adapter app, try turning it off.
- If Netflix playback issues happen only while connected to a Microsoft Wireless Display Adapter:
- Make sure the adapter is up to date.
- Close and reopen Netflix.
- Disconnect from the adapter.
- Restart the PC.
- Reconnect to the adapter and test again.
- If using a Microsoft 4K Wireless Display Adapter, make sure Enable HDCP is turned on in the app.
Because the problem happens in both the Netflix app and Chrome, the most relevant Windows-side fixes are restarting the audio services and updating or rolling back the audio driver.