PyQt QSplashScreen Image Resolution

Question

I have a QSplashScreen with an image.The image looks fine when I open it. But When I run the splash, the picture has become full screen and blurred. I think it should be because the resolution of the picture is too high, but I don't know what to do.By the way, it's pyqt6. MacBook Pro 14（3024 × 1964）

if __name__ == '__main__':
    app = QApplication(sys. argv)
    qp = QPixmap("./ICON/cover.png")
    splash = QSplashScreen(QPixmap(qp))
    splash.show()
    app.processEvents()
    myMainWindow = QMainWindow()
    myUi = Main_Window.Ui_MainWindow()
    myUi.setupUi(myMainWindow)
    splash.finish(myMainWindow)
    myMainWindow.show()
    sys. exit(app.exec())