iPhone 12 pro 2x lens focusing

I understand that might not many people taking video frequently with the 2x lens but I would like to ask if anyone has the same experience?

I have a focusing problem with my 2x lens while recording a video.

It, repeatedly, would be out of focus and re-focus again during the recording. During the recording, the person in the video was just moving at a very minimal body gesture as a normal person would have while talking.

I have sent my device for Apple reparation twice yet the technician kept returning my device with the problem unsolved. It has been taking up too much of my time and severely affected my work.

And now my device has sent for the reparation for the THIRD time, hopefully, the problem can be solved.