PwgWriter的.write(renderableDocument)方法加载很慢

[xayo69]

private static void saveRenderableDocumentAsPWG(RenderableDocument renderableDocument,ColorSpace colorSpace, OutputStream outputStream) throws IOException {
OutputSettings outputSettings = new OutputSettings(colorSpace, Sides.oneSided, MediaSource.auto, null, false);
PwgSettings caps = new PwgSettings(outputSettings);
PwgWriter writer = new PwgWriter(outputStream, caps);
writer.write(renderableDocument);
writer.close();
}

这段代码加载的时候，加载很慢，很占内存，如何处理？