Visual progress is too high

Page is almost empty but Visual progress is above 90%. “Speed Index” and “Largest Contentful Paint” are too low. This page loads some static content and then makes web service calls to get data to load main content. Is there a way I make these numbers more meaningful?

Here is the result:
https://webpagetest.org/result/210202_DiZY_70a53e25ce35fbd8caa94216d6c4a72b/

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