Hello,
It is out of scope of theme support.
But we would like to give you tips.
Please view this test https://gtmetrix.com/reports/www.enduranceautosport.win/GIFZBkrh , Currently your site speed is 5.3s, it is also good.
Your page size is little bit high ( 12.1MB ), if you work on it, we believe your site speed lower than 3 seconds.
Best Regards!
Acme Themes