Thank you for your support of Xiaomi products. All devices undergo rigorous professional inspection before leaving the factory, ensuring their quality and reliability. When switching frame rates, you can notice some screen flickering. This can occur due to slight differences in brightness adjustment at various frame rates, and the human eye is particularly sensitive to these changes in low ambient light conditions. This is a normal phenomenon and part of the device's adaptive display technology. To minimize any impact, consider increasing the screen brightness to enhance visibility and reduce the perception of flickering. We appreciate your understanding and hope you continue to enjoy using Xiaomi products.