Hello,
Take my apologies for the delay in answering.
If we use Pingdom to test your site we get much better results https://tools.pingdom.com/#5cbafcddd5400000
Even if we use the built-in browser test tools https://prnt.sc/t6cxax
Unfortunately, we don’t have any other solutions for you because individual site optimization is outside the scope of our support and we don’t have advanced site optimization experts in our support team. If you need help with the individual site optimization you may contact our partners who specialized in this – WPKraken team.
Regards