Hi,
First of all I dont measure the website with pagespeed insights. I use gtmetrix because its really consistent and it grades the website on actual visitor experience. As I said in the report, the ADS you are running have a big impact on the gtmetrix score. They have an even higher impact on your pagespeed insights score. Only option is to remove it but i guess you don't want that.
Second, I use gtmetrix with settings selected for your site. I guess you just tested the site with default settings and default location in canada. That doesn't represent the website as it is. I also did an average test. You cant tell me that your page consistently scores 8 seconds on your end. I also provided links to my reports to see the results.
Festinger