take time to generate a pdf with mPDF Kartik for Yii2

Question

I am generating a pdf with 41 and this taking about 3 minutes, would be able to generate this file faster?

follows the code:

    $pdf = new Pdf([
        // set to use core fonts only
        'mode' => Pdf::MODE_CORE,
        // A4 paper format
        'format' => Pdf::FORMAT_A4,
        // portrait orientation
        'orientation' => Pdf::ORIENT_PORTRAIT,
        // stream to browser inline
        'destination' => Pdf::DEST_BROWSER,
        // your html content input
        'content' => $content,
        // format content from your own css file if needed or use the
        // enhanced bootstrap css built by Krajee for mPDF formatting
        'cssFile' => '@vendor/kartik-v/yii2-mpdf/assets/kv-mpdf-bootstrap.min.css',
        // any css to be embedded if required
        'cssInline' => '.kv-heading-1{font-size:14px}',
        // set mPDF properties on the fly
        'options' => ['title' => 'Relatório de plano de contas'],
        'defaultFontSize' => 3,
        'marginLeft' => 10,
        'marginRight' => 10,
        'marginTop' => 30,
        'marginBottom' => 11,
        'marginHeader' => 6,
        'marginFooter' => 6,
        // call mPDF methods on the fly
        'methods' => [
            'SetHeader' => [$header],
            'SetFooter' => ['<p style="text-align: center;font-size: 8px;">Documento emitido pelo Mono Sistemas Gestão Empresarial. Todos os Direitos Reservados © www.monosistemas.com.br</p>'],
        ]
    ]);
    $pdfName = 'PLANO_DE_CONTAS-_' . date('d-m-Y') . '.pdf';

    Yii::$app->response->format = Response::FORMAT_HTML;
    Yii::$app->response->setDownloadHeaders($pdfName, 'application/pdf');

    return $pdf->render();

}