Sony a7s3 AF issue

[Xaquar]

AF doesnt work properly on A7s3 and I tested it with other friends that have also a7s3 and same problem so its not a body but software.

You can see how it jump and I had speed on 3

- after I focus more for distance and come back it works fine but after while jump again.

This happening only in detailes that are close to each other and on lenses 50mm+

 

Video: https://www.youtube.com/watch?v=77O2DBQZvOU