1. Turn off Icons Minds from Settings. It will save about 1.2MB if you are not using that. By Default, It will not load on your page, If you are not using any widget related to Iconsmind.
Do you love icons mind and Do you want to keep that using on some pages? You may sue that by selecting diable and adding page is by a separated comma.
2. Make sure you have disabled all unused widget from The Plus Settings -> PlusWidgets
That’s it. Rest will be handled by our Advanced Caching Architecture. What is Advanced Caching Architecture of The Plus Addons?
This article from Elementor can show you some more options and tricks for better optimisation of your website for an amazing performance.
Speed Up slow elementor Website
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Elementor Master Class : By Simon Shocket : Part 1