Feedback on structure and site performance

Hello, Squarespace community. 

My website is https://mkonlogistics.com , we are a B2B service provider for transportation companies. Overall feedback is very welcomed, but I have a particular inquiry. I apologize if this is not the place to post it, but It feels like it might be. Would appreciate redirect instructions if this is not the place.

I used https://pagespeed.web.dev , which I believe is run by Google, to scan my website. The result is positive in all the sections, except the "Performance" metric, where the website shows a 40% rating. I attached the pictures of the results and the deficiencies stated. I contacted Squarespace directly regarding the "Reduce unused Java Scripts" recommendation (seemingly the one that has the most negative impact). The response was that it is not something that can be done and it's not actually a problem.

I would appreciate feedback on the actual importance of this "Performance" metric, from the point of view of SEO for my website. And how to fix this performance issue?

p.s. The scan is in the mobile format because our clients use our site primarily from mobile devices.

Thank you

Octavian

I have the same issue. It seems it is on their end since it shows assets.squarespace.com. Hopefully this gets fixed