ACI MOTOR current-loop deviation &frequency response problem

Hello:

          I'm now using ACI motor to test current loop(Level4)

            and here's the control result:

            id_ref  0.08        iq_ref 0.01  run at 900rpm (0.6pu for 1pu=1500rpm)

                  for 1pu=60A  

                  id_feedback   range from 0.065~0.08~0.095     pu

                  iq_feedback   range from  0.085~0.1~0.115      pu

                  both id,iq  deviate from ref about +- 1A

                  It's  +-1A current deviation  acceptable or  what  can  I do  to further decrease the deviation 

                  because when I test   iq's frequency-response

                  by trying different sets of KP KI ,the bandwidth seeems to stuck at 340Hz

                  and  I wonder  whether +-1A deviation is a problem .        

                  Here's motor parameter   use 220V delta-conncect  

                  Any suggestion would be appreciated.