The Xiaomi 14T Pro experiences stuttering when recording videos in 8K movie frame size due to high CPU load, especially if multiple APPs are running in the background. The camera relies on significant processing power to manage the demanding requirements of 8K video recording, and if the CPU is heavily taxed, it can lead to performance issues such as stuttering or lag. To enhance your recording experience, it's advisable to close any unnecessary applications before filming to free up system resources. Additionally, ensure that your device is updated to the latest software version. By following these recommendations, you can achieve smoother and more reliable 8K video recordings.