How can I implement proper lazy loading of a CoMagic script?

Question

Search Engine Optimization

Hello, there is such a task. It is necessary to optimize the page on which the CoMagic code of this kind is placed.

<script type="text/javascript">
var __cs = __cs || [];
__cs.push(["setCsAccount", "xxxxxxxx"]);
</script>
<script type="text/javascript" src='https://app.comagic.ru/static/cs.min.js' async></script>

Optimization is needed for pagespeed. Tried passing through onload. but for some reason it still shows up in pagespeed

Answer 1

And what will it give you? 1 pip in Pagespeed? You shouldn't bother so much, if it swears at JS and CSS
And what does it swear at?