1. Experiment with different sizes of ear tips to find the best fit and achieve a tight seal. If one earbud doesn't fit well, try using different sizes for each ear, such as medium in one ear and large in the other.

2. Use the Fit Test in the soundcore app to check how well your earbuds fit. A poor fit may affect the quality of noise cancellation.

3. Enable Real-time Adaptive ANC in the app, and the earbuds will automatically select the optimal amount of noise reduction according to your environment.

4. In the app, select Noise Cancellation > Mode > Adaptive ANC/Manual Mode/Multi-Scene ANC. Choose the appropriate noise cancellation mode based on your personal preference and noise level in your environment.

5. Test the earbuds in various environments to see if there's a difference in performance. Since ear canals differ from person to person, try different ear tips for each ear if you fail the Fit Test.

6. Wind Noise Reduction is recommended for use in windy environments. Please disable in indoor or calm conditions.

Note: Noise cancellation might seem less effective in noisy environments.

If you encounter any other issues or your issue has not been resolved, please contact us for further assistance.