Hello,

In general, our theme is already optimized and don’t have too many resources to make your website slow. Most likely, your website performance suffers from the content you have added to your website. It may happen in case of too many large not optimized images or other resources. So we suggest you to remove unnecessary plugins, install some kind of JS & CSS optimizing plugins like Better WordPress Minify and a caching plugin like WP Super Cache or use WP Rocket for both tasks. Setup CDN service like KeyCDN and contact your hosting provider to check the situation from their side as well. Also, you can use GTmetrix tool to see what makes your website slow and optimize these parts of your website.

Kind Regards
XTemos Studio