RFID MFRC522 stops after a certain number of times

Other Hardware General Electronics
1

Board : Arduino UNO R3 / ATmega328P
Library : MFRC522

MFRC522 dont' read cards after 170 readings.
it also don't work at other example codes.
It works when I upload the bootloader.
What's the problem with this?

// RFID-Read NUID

#include <SPI.h>
#include "MFRC522.h"

#define SS_PIN 10
#define RST_PIN 9

MFRC522 rfid(SS_PIN, RST_PIN); // Instance of the class

MFRC522::MIFARE_Key key; 

// Init array that will store new NUID 
byte nuidPICC[4];

void setup() { 
	Serial.begin(115200);
	SPI.begin(); // Init SPI bus
	rfid.PCD_Init(); // Init MFRC522 

	for (byte i = 0; i < 6; i++) {
		key.keyByte[i] = 0xFF;
	}

	//Serial.println(F("This code scan the MIFARE Classsic NUID."));
	//Serial.print(F("Using the following key:"));
	//printHex(key.keyByte, MFRC522::MF_KEY_SIZE);
	if (rfid.PCD_PerformSelfTest()) Serial.println("Passed Self-Test");
}

void loop() {
	// Reset the loop if no new card present on the sensor/reader. This saves the entire process when idle.
	if ( ! rfid.PICC_IsNewCardPresent())
		return;

	// Verify if the NUID has been readed
	if ( ! rfid.PICC_ReadCardSerial())
		return;

	for (byte i = 0; i < rfid.uid.size; i++) {
		Serial.print( rfid.uid.uidByte[i] < 0x10 ? " 0" : " ");
		Serial.print( rfid.uid.uidByte[i] , HEX);
	}
	
	//Serial.print(F("PICC type: "));
	//MFRC522::PICC_Type piccType = rfid.PICC_GetType(rfid.uid.sak);
	//Serial.println(rfid.PICC_GetTypeName(piccType));

	// Check is the PICC of Classic MIFARE type
//	if (piccType != MFRC522::PICC_TYPE_MIFARE_MINI &&  
//			piccType != MFRC522::PICC_TYPE_MIFARE_1K &&
//			piccType != MFRC522::PICC_TYPE_MIFARE_4K) {
//		Serial.println(F(" wrong!"));
//		return;
//	}

	if (rfid.uid.uidByte[0] != nuidPICC[0] || 
			rfid.uid.uidByte[1] != nuidPICC[1] || 
			rfid.uid.uidByte[2] != nuidPICC[2] || 
			rfid.uid.uidByte[3] != nuidPICC[3] ) {
		Serial.println(F(" new card"));

		// Store NUID into nuidPICC array
		for (byte i = 0; i < 4; i++) {
			nuidPICC[i] = rfid.uid.uidByte[i];
		}

	}
	else Serial.println(F(" previous card"));

	// Halt PICC
	rfid.PICC_HaltA();

	// Stop encryption on PCD
	rfid.PCD_StopCrypto1();

}
2

I'm testing 2072 times..
It works well....
Should I cry or laugh?