The toolbox helps us only to improve our custom component. You can see there the avrg. loading time and the api calls. Based on that date you may can do some improvements like adding caching ore load data dynamic within the frontend. An other way to improve the page load speed is to load Lithium Components asynchron by JavaScript, but that works for now only out of page context, like regarding to an specific category or board id. In 18.12 we should get an improved toolbox as well. Maybe we get more useful information to improve custom components, with that update.
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