Audio Stuttering over bluetooth on 9.2

I have an Alfawise S92, ARM S912, and audio played over bluetooth earphones is stuterring as if the connection was unstable. Audio over HMDI is not affected.

The stuttering seems getting worst with distances (above 3 feet), but even standing next to the box won’t solve the problem.

I have tried different media source and the problem is consistent.

I can provide any more information upon request.