Just found that Cloudflare Rocket Loader turned-off increased speed by 3x
I was using Cloudflare Rocket Loader since last year when I switched to Elementor from Kadence theme/site builder. But my site was slowing down quite a lot and the Google Adsense ads also used to load quite late thereby loss of revenue. My web developer friend found out that by switching Rocket loader “off” from within the Cloudflare’s dashboad instantly decreased my site’s page loading time, and even Adsense ads started loading quickly on both desktop and mobile. Also the navigation menu button on the site when viewed from mobile started functioning properly. We found that somehow the Roc-ket loader was messing with the Elementor’s javascripts and they were not firing at all thus breaking the site and decreasing its speed. Therefore, if you are facing slow site loading issues and have enabled rocket loader then turn it off and re-validate your pagespeed score or check from your browser after clearing all cookies and cache. Hope this helps you increasing your site’s speed.