Stepper jitters after sleeping for a while

I have a stepper motor driving a air pressure reg. with a pressure sensor as feedback in a closed loop , right now I am using a pot to 3.3vdc for the set point , it works good BUT the motor jitters after it sleeps for a while ( I use a deadband to disable the motor after it hits its target ) after waking up it jitters to position , after 3-5 changes in setpoint it clears up ??

Any idea what is causing this to happen ?? ( I have tried not serialprinting anything and that makes no
difference )

#include <Arduino.h>
#include "BasicStepperDriver.h"
#include "A4988.h"
#include <MovingAverage.h>
MovingAverage average(0.1f);

#define MOTOR_STEPS 200
#define RPM 80
#define MICROSTEPS 1
#define DIR 8
#define STEP 9
#define ENABLE 10
//#define MOTOR_ACCEL 200
//#define MOTOR_DECEL 1000

A4988 stepper(MOTOR_STEPS, DIR, STEP, ENABLE);

const int ANALOG_PIN0 = A2;  // sensor
const int ANALOG_PIN1 = A3;//pot
int sensorValue0 = analogRead(A2); // sensor
int sensorValue1 = analogRead(A3); // pot
int val0 = 0;
int val1 = 0;
float deadBand;
double error;

void setup() {
  Serial.begin(115200);
  average.reset( analogRead(A2) );
    
  stepper.begin(RPM, MICROSTEPS);
//   stepper.setSpeedProfile(stepper.LINEAR_SPEED, MOTOR_ACCEL, MOTOR_DECEL);
  
  deadBand = 25.0;  //stop moving when error < deadBand
}
void measurePressure() {
  int raReading = analogRead(A2);

  float psi0 = ((30 - 0) / (902.0 - 127.3)) * (raReading - 20);
  Serial.println(psi0);
  Serial.println("psi");
}
void loop() {
  //analogReadResolution(12);// set to 12bit ACD
  ( average.update( analogRead(0) ) );

  val0 = analogRead(A2);     // read the input pin
  Serial.println(val0);             // debug value
  //Serial.println("sensor");
  val1 = analogRead(A3);     // read the input pin
  Serial.println(val1);             // debug value
  //Serial.println("pot");

  error = val0 - val1;
  Serial.println(error);
  if (abs(error) < deadBand ) error = 0;

  measurePressure();
  delay (1);

  stepper.enable();
  stepper.move(-error);
  
  stepper.disable();

  delay(1);
}

I figured it out , I had the current set to MAX on the A4988 driver ! all good now

FYI check your current settings