Smush and NitroPack are compatible. You just need to disable Smush's lazy loader from the plugin's "Lazy Load" menu.

Check out the video, or follow along with the steps below to see how you can do that.

1. Open the Smush plugin in your WordPress admin panel and click on "Lazy Load".

2. Scroll to the bottom of the page, click "Deactivate" and save your settings.

And that's all there is to it!