Vivo X300 Pro Kinemaster Issue

Is anyone else experiencing an issue on the Vivo X300 Pro where, while using KineMaster, the video playback starts lagging after 10 seconds during a voice-over? Furthermore, after recording a continuous voice-over for 2 minutes, the audio goes out of sync. I have been facing this problem ever since I purchased this phone, and despite reporting it multiple times, it still hasn't been fixed.