Thank you for supporting Xiaomi products. Due to compatibility issues related to the cable quality, material, or other external factors. Certain HDMI cables can not fully meet the required transmission standards, leading to signal instability, which results in flickering or display interruptions.
To resolve this issue, it is recommended to replace the HDMI cable with a high-quality, certified one that supports stable data transmission. Additionally, reconnecting the cable securely and ensuring that both the hub and TV ports are free of dust or damage can help improve the connection.