When using a NEMA 23 stepper motor
 

When using a Nema 23 stepper motor (rated current 3A, supply voltage 24-48V) with an analog stepper driver (such as one based on TRINAMIC TMC2209 in analog control mode), if low-speed high-torque output is required (e.g., below 15 RPM driving a heavy load) while demanding extremely quiet and vibration-free motor operation, how should the driver's microstepping, current, and decay mode be configured?