ADE9153A : Current Calibration : Sense Register issue

Hello Everyone.

I am using ADE9153A. I have used ADE5153A shield recommended guide lines for design.

On performing auto calibration using different values sense register I am receiving different values of AVCC and AICC registers. but current also changes for same load.

I have tried 5mOhm, 10mOhm, and 2mOhm sense register.

On ade9153A shield they have used 1mOhm register. there I am receiving correct values for current and voltages.

Are there any particular guidelines which should be followed while designing current sense circuitry using ADE9153A ? 

Any help would be useful.

Thank you.