Thank you for supporting Xiaomi products. Rapidly launching and exiting APPs can cause lag due to the high-load scenario created by these actions. When you quickly switch between APPs, the device needs to allocate more processing power to handle the transitions, which results in a quick temperature rise.
To protect the device's hardware from overheating, extend its battery endurance, and maintain system stability, the system automatically applies performance limitations in these high-load scenarios. This is a thermal management feature that reduces performance temporarily to prevent excessive heat buildup. The performance throttling helps safeguard both the safety of the device and its thermal efficiency during demanding tasks.
Please allow the device to cool down to normal temperature and clear background APPs to significantly improve performance.