The site has Yandex Metric
<script type="text/javascript" data-skip-moving=true>
(function (d, w, c) {
(w[c] = w[c] || []).push(function() {
try {
w.yaCounterXXXX = new Ya.Metrika2({
id:XXXX,
clickmap:true,
trackLinks:true,
accurateTrackBounce:true,
webvisor:true,
trackHash:true,
triggerEvent:true
});
} catch(e) { }
});
var n = d.getElementsByTagName("script")[0],
s = d.createElement("script"),
f = function () { n.parentNode.insertBefore(s, n); };
s.type = "text/javascript";
s.async = true;
s.src = "https://mc.yandex.ru/metrika/tag.js";
if (w.opera == "[object Opera]") {
d.addEventListener("DOMContentLoaded", f, false);
} else { f(); }
})(document, window, "yandex_metrika_callbacks2");
</script>
The page loading is pretty fast, but the FIRST click is awfully long 1326ms Such a reaction to the first click is only on pages where there is a lot of everything (text, pictures, checkboxes). Here's what happens when you click screenshot
Most of the time it takes w.calcChildrenChecksum I already set false all options when calling Metrics and the ym-disable-clickmap classes I used. Nothing helped
In general, reason of the problem is Webvisor 2.0. Because it works with full page. It is right, that w.calcChildrenChecksum loads processor if you page has a lot of elements in DOM. You can use another settings for Yandex.Metrika to solve the problem.
Try to use "Legacy code counter" and "Webvisor 1.0."
Example is here:
enter image description here
and here
enter image description here
I have got answer by Yandex.Support in russian language: