Mobile Site Speed

Recently we have been running speed reports on our website and noticed that the below script has been slowing down the performance of the mobile version of the site. This is the site: https://lilac-sailfish-7xys.squarespace.com/ which is running on the 7.1 version.

This is the script that is slowing down the mobile version: https://assets.squarespace.com/universal/scripts-compressed/common-cc2c6334436469eb1efb1-min.en-US.js 

Can anyone please advise if changing the template or removing this script would assist in changing the speed of the mobile site?

Many thanks, Karl