Added NTPClient and fixed that "random time delay" bug by applying pull request #62 https://github.com/arduino-libraries/NTPClient/pull/62. Also improved randomness by using the returned data from the NTP server to seed the RNG.

pitrix.ino

@@ -5,9 +5,9 @@
 
 #define FASTLED_INTERNAL
 #include "FastLED.h"
-#include <NTPClient.h>
 #include <PubSubClient.h>
 #include "SimpleList.h"
+#include "ntp.h"
 
 #include "config.h"
 CRGB leds[LED_COUNT];
@@ -98,7 +98,7 @@ void setup() {
   wifi_setup();
   ota_setup();
   fastled_setup();
-  ntp_setup();
+  ntpClient.begin();
   mqtt_setup();
   Serial.println("Core * Setup complete");
 }
@@ -128,7 +128,7 @@ void loop() {
     return;
   }
   
-  ntp_loop();
+  ntpClient.update();
   mqtt_loop();
   
   EVERY_N_MILLISECONDS(1000 / FPS) {