Try ARDUINO_USB_MODE=2 (native MIDI only)

Disable CDC, use ESP32 core native USB MIDI stack

src/midi_transport.cpp

@@ -13,8 +13,6 @@ UsbMidiTransport::~UsbMidiTransport() {
 bool UsbMidiTransport::begin() {
     Serial.println("[MIDI] Setting up USB MIDI device...");
 
-    // Novation Launchpad X identifiers so Loopy Pro recognizes us
-    TinyUSBDevice.setID(0x1235, 0x0103);
     TinyUSBDevice.setManufacturerDescriptor("Novation");
     TinyUSBDevice.setProductDescriptor("Launchpad X");
     TinyUSBDevice.setSerialDescriptor("LPX00001");