Sudden drop in quality when casting from Windows to TCL TV

Troubleshooting Sudden Decline in Mirroring Quality from Windows to TCL TV

Streaming and screen mirroring are essential features for many users aiming to enjoy content on larger screens. However, disruptions in the quality of mirrored displays can be frustrating. Recently, some users have noticed a sudden degradation in the visual clarity when streaming from Windows PCs to TCL TVs using browser mirroring tools. This article explores potential causes and solutions to restore optimal streaming quality.

Understanding the Issue

For over a year, many Windows users have successfully utilized Chrome and Edge browsers to mirror their screens to TCL TVs, enjoying clear, high-resolution images. Recently, however, users report that the mirrored window appears pixelated and low-resolution, despite no recent changes to their setup. Standard troubleshooting steps such as restarting the TV, PC, and router have not resolved the problem.

Interestingly, alternative streaming methods like Apple AirPlay continue to function perfectly, indicating that the issue specifically pertains to browser-based mirroring from Windows systems.

Common Causes and Considerations

Several factors can contribute to sudden drops in streaming quality:

1. Browser Updates or Settings Changes:

2. Automatic browser updates may alter mirroring functionalities or default settings, affecting streaming performance.

3. Display Resolution and Scaling Settings:

4. Changes in display resolution or scaling options on Windows might impact the mirrored output.

5. Network Bandwidth and Connectivity:

6. Although restarting network devices didn’t help, network congestion or reduced bandwidth might still influence streaming quality.

7. Mirroring or Casting Method Alterations:

8. Updates to Chrome, Edge, or the underlying casting protocols could introduce compatibility issues.

9. GPU or Driver Issues:

10. Outdated or corrupted graphics drivers may impair screen sharing quality.

Recommended Troubleshooting Steps

To address and rectify the issue, consider the following approaches:

1. Verify Display Settings:

2. Ensure that your Windows display resolution matches your TV’s native resolution for optimal mirroring quality.

3. Update Browser and Graphics Drivers:

4. Keep Chrome, Edge, and graphics drivers up to date to benefit from the latest fixes and improvements.

5. Adjust Mirroring Settings:

6. Explore the display or casting settings within your browser to optimize quality, such as enabling hardware acceleration.

7. Try Alternative Casting Methods:

8. Use different casting features or dedicated applications (e.g., Miracast, Windows Connect app) to see