PDF conversion in this format is very slow. Is there any room for optimization?

public static void main(String[] args) throws IOException, InterruptedException {
		File file = new File("D:\\fcs\\test\\test6\\image2.pdf");

		final PDDocument load = PDDocument.load(file, MemoryUsageSetting.setupTempFileOnly()
				.setTempDir(new File("D:\\fcs\\test")));

		try {
			PDFRenderer renderer = new PDFRenderer(load);
//			renderer.setSubsamplingAllowed(true);
			int pageIndex = 0;
			float scale = 2f;
			BufferedImage bufferedImage = renderer.renderImage(pageIndex, scale, ImageType.RGB);
			FileOutputStream fos = null;
			try {
				fos = new FileOutputStream(new File("D:\\fcs\\test/test6/image" + pageIndex + ".jpg"));
				ImageIO.write(bufferedImage, "jpg", fos);
			} finally {
				if (fos != null) {
					fos.close();
				}
			}
		} catch (Throwable e){
			e.printStackTrace();
		}
		Thread.sleep(6000000);
	}