Hi,

First, I need to say your site has great speed. When I access to your site via anonymous browser, I can get your site within 2s. That's great speed for any website.

About the speed issues, yeah, the issue caused by recently Google just updated rules for google page speed insights. On mobile, it requirements too much things about "Reduce server response times (TTFB)" and requirements to limit to use css & javascript. It apply for all sites now. And most of issues on mobile based on your hosting much.. Currently, there is no way to optimize it on mobile... And most of all sites on internet has speed like so.

We will find more about this, if there is solution - we will write a solution for all customers

Best Regards,

PenciDesign