Google Charts, 8 second rendering difference between Ipad Mini and Moto E4 Plus Smartphone

I am in the process of learning about Google Charts and render a web page that displays six simple SVG charts and curious to know why the 8 second rendering discrepancy occurs.

A Mysqli table is selected and the latest 50 results extracted, modified and saved to a CSV file.

The CSV file is loaded, modified and passed to the Google SVG Charts script.

Numerous browsers have been tried and all have a large rendering discrepancy between the iPad mini and smartphone.

I would have thought tha the server side SVG Charts HTML source would render similar results,

Desktop rendering is similar to the iPad mini.

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