Arduino Micro gets not recognised as a game controller

[akut]

Looks like waiting for serial was the problem
This fixed it:

void setup() {
  Serial.begin(9600);

  Serial.println("32-Button Custom Gamepad Controller");

  // Initialize custom HID FIRST
  static HIDSubDescriptor node(_hidReportDescriptor, sizeof(_hidReportDescriptor));
  HID().AppendDescriptor(&node);
  
  // Add small delay for HID to initialize
  delay(100);

  // Initialize gamepad report
  gamepadReport.reportId = 1;
  gamepadReport.buttons = 0;