docs: add performance advice to disable default menu creation (#35525)

docs/tutorial/performance.md

@@ -419,6 +419,18 @@ environment that needs to handle both Node.js and browser environments.
 As of writing this article, the popular choices include [Webpack][webpack],
 [Parcel][parcel], and [rollup.js][rollup].
 
+### 8. Call `Menu.setApplicationMenu(null)` when you do not need a default menu
+
+Electron will set a default menu on startup with some standard entries. But there are reasons your application might want to change that and it will benefit startup performance.
+
+#### Why?
+
+If you build your own menu or use a frameless window without native menu, you should tell Electron early enough to not setup the default menu.
+
+#### How?
+
+Call `Menu.setApplicationMenu(null)` before `app.on("ready")`. This will prevent Electron from setting a default menu. See also https://github.com/electron/electron/issues/35512 for a related discussion.
+
 [security]: ./security.md
 [chrome-devtools-tutorial]: https://developers.google.com/web/tools/chrome-devtools/evaluate-performance/
 [worker-threads]: https://nodejs.org/api/worker_threads.html