On a Cartesian machine 1/32 is over kill in my view. Due to the way steppers work, you don't get increased accuracy, just lower noise (steppers do not move on every micro step)
It also limits the max speed of the machine as it has to send out twice the steps over 1/16th (its only a slow 16mhz processor)
It also limits the max speed of the machine as it has to send out twice the steps over 1/16th (its only a slow 16mhz processor)