2 P5 32x64: Ghosting issues.

[NguyenMinhTri]

Hello everyone, when I use the code below for two P5 32x64 LED panels, I encounter ghosting issues. Can anyone help me? I don't know what is causing it.
Thanks and best regards,
My Code
#include <ESP32-HUB75-MatrixPanel-I2S-DMA.h>
#include <FastLED.h>

// GPIO Configuration
#define R1_PIN 25
#define G1_PIN 26

#define B1_PIN 27
#define R2_PIN 21
#define G2_PIN 22
#define B2_PIN 23
#define A_PIN 12
#define B_PIN 16
#define C_PIN 17
#define D_PIN 18
#define E_PIN -1
#define CLK_PIN 15
#define LAT_PIN 32
#define OE_PIN 33

// Matrix Configuration
#define MATRIX_WIDTH 128
#define MATRIX_HEIGHT 64

#include <ESP32-VirtualMatrixPanel-I2S-DMA.h>

#define PANEL_RES_X 64
#define PANEL_RES_Y 32
#define NUM_ROWS 2
#define NUM_COLS 1
#define PANEL_CHAIN NUM_ROWS *NUM_COLS
#define VIRTUAL_MATRIX_CHAIN_TYPE CHAIN_TOP_LEFT_DOWN

MatrixPanel_I2S_DMA *dma_display = nullptr;
VirtualMatrixPanel virtualDisp = nullptr;
// Thêm biến buffer
uint16_t screenBuffer = nullptr;

void setup() {
Serial.begin(115200);
delay(2000);

// Matrix Configuration
HUB75_I2S_CFG mxconfig(PANEL_RES_X, PANEL_RES_Y, PANEL_CHAIN);
mxconfig.gpio.r1 = R1_PIN;
mxconfig.gpio.g1 = G1_PIN;
mxconfig.gpio.b1 = B1_PIN;
mxconfig.gpio.r2 = R2_PIN;
mxconfig.gpio.g2 = G2_PIN;
mxconfig.gpio.b2 = B2_PIN;
mxconfig.gpio.a = A_PIN;
mxconfig.gpio.b = B_PIN;
mxconfig.gpio.c = C_PIN;
mxconfig.gpio.d = D_PIN;
mxconfig.gpio.e = E_PIN;
mxconfig.gpio.clk = CLK_PIN;
mxconfig.gpio.lat = LAT_PIN;
mxconfig.gpio.oe = OE_PIN;
mxconfig.i2sspeed = HUB75_I2S_CFG::HZ_20M;

dma_display = new MatrixPanel_I2S_DMA(mxconfig);
dma_display->setBrightness8(128);

if (!dma_display->begin()) {
Serial.println("I2S memory allocation failed!");
return;
}

virtualDisp = new VirtualMatrixPanel((*dma_display), NUM_ROWS, NUM_COLS, PANEL_RES_X, PANEL_RES_Y, VIRTUAL_MATRIX_CHAIN_TYPE);
drawStaticContent();
}

void loop() {

}

void drawStaticContent() {
int centerX = virtualDisp->width() / 2;
int centerY = virtualDisp->height() / 2;

int colorGreen = virtualDisp->color565(0, 255, 0); // Màu xanh lá cây tươi
int colorWhite = virtualDisp->color565(255, 255, 255); // Màu trắng

virtualDisp->fillScreen(0); // Xóa màn hình một lần duy nhất

virtualDisp->setTextColor(colorWhite);
virtualDisp->setTextSize(3);
virtualDisp->setCursor(centerX - 18, centerY - 10); // Căn chỉnh chữ giữa màn hình
virtualDisp->print("OM");
}

[mrcodetastic]

Does changing the clkphase value help? Or reduce the clock frequency?