4 Digit 7 segment display flickering I am attempting to make an Arduino counter using a 4 digit 7 segment display. The problem I am encountering is the display flickers. I am using an Arduino Uno and 5641AS digit display (so common cathode). Here is my program:
#include &quot;SevSeg.h&quot;
SevSeg sevseg; 

int buttonPress{}; // Variable used in Serial monitor, simulates button press to increment counter
void setup(){
  byte numDigits = 4;
  byte digitPins[] = {10, 11, 12, 13};
  byte segmentPins[] = {9, 2, 3, 5, 6, 8, 7, 4};

  bool resistorsOnSegments = true; 

  bool updateWithDelays = false; 
  byte hardwareConfig = COMMON_CATHODE; 
  sevseg.begin(hardwareConfig, numDigits, digitPins, segmentPins, resistorsOnSegments);
  sevseg.setBrightness(90);
  Serial.begin(9600);
  sevseg.setNumber(0);
  sevseg.refreshDisplay();
}
void loop(){
  static int number = 0;
  
  if (Serial.available() &gt; 0) { // Serial monitor input for buttonPress
    buttonPress = Serial.read();
  }
    Serial.println(&quot;The value of buttonPress is:  &quot;);
    Serial.println(buttonPress);
    if (buttonPress == 10){ // Increment counter if buttonPress Serial monitor input = 10
    number += 15;
    buttonPress = 0; 
    sevseg.setNumber(number); // Display the number on 4 digit 7 segment display   
    }

    sevseg.refreshDisplay(); // Refresh display
}

I suspect this issue has to do with sevseg.refreshDisplay(), I have tried moving it in the program with no avail. My wiring is correct, as the program displays the correct digits. Thank you!
With the help of Majenko and jsotola in the comments, I've got it fixed! It was the text I was displaying in the Serial Monitor that was slowing the display down. Here is the updated program that works:
#include &quot;SevSeg.h&quot;
SevSeg sevseg; 

int buttonPress{}; // Variable used in Serial monitor, simulates button press to increment counter
void setup(){
  byte numDigits = 4;
  byte digitPins[] = {10, 11, 12, 13};
  byte segmentPins[] = {9, 2, 3, 5, 6, 8, 7, 4};

  bool resistorsOnSegments = true; 

  bool updateWithDelays = false; 
  byte hardwareConfig = COMMON_CATHODE; 
  sevseg.begin(hardwareConfig, numDigits, digitPins, segmentPins, resistorsOnSegments);
  sevseg.setBrightness(90);
  Serial.begin(9600);
  sevseg.setNumber(0);
  sevseg.refreshDisplay();
}
void loop(){
  static int number = 0;
  
  if (Serial.available() &gt; 0) { // Serial monitor input for buttonPress
    buttonPress = Serial.read();
  }
// THE NEXT TWO LINES HAVE BEEN COMMENTED OUT FOR IT TO WORK
   // Serial.println(&quot;The value of buttonPress is:  &quot;);
   // Serial.println(buttonPress);
    if (buttonPress == 10){ // Increment counter if buttonPress Serial monitor input = 10
    number += 15;
    buttonPress = 0; 
    sevseg.setNumber(number); // Display the number on 4 digit 7 segment display   
    }

    sevseg.refreshDisplay(); // Refresh display
}

I'm leaving the program modifications here in case anyone else gets the same problem.