Probably need more information as to when the fault occurs, acceleration, at speed , changing speed or when stopping. I have updated the parameter file for this machine, see attached.
1. Make sure the motor parameters are set correctly.
2. Run autotune and specify that the motor values should be used (see attached).
3. You can increase the current overload b022, I am not sure of the factory default, but try something like 150 or 170 %.
4. The 1440GT tends to stutter on acceleration, change the acceleration time to 3 seconds. Change the acceleration curve to linear A097 to 00.
Starting point, let us know how it goes.
Mark