I have comprised all my images on my site, before it was around 62% now it's 88% for performance grade. I’m trying to increase the percentage to at least 90% or more. I’m currently on version 7 - If I were to change the version would that help?
According to Squarespace changing the version would not help, they told me this in December. I find 7.1 much easier to update and more design freedom so that decision would be up to you! But you wouldn't need to just for site speed.