Will Spotlight slow down my website?
No - built using the same technologies as Netflix and Instagram, Spotlight avoids iFrames and other hacks to make sure performance isn’t impacted. Dynamic loading is applied to make sure your page-loading times before and after installation are practically the same, both on the front-end and the back-end.
Should you test your website's page loading speed using tools such as GT Metrix, please read this article about potential results.
If you do encounter any slowness, please reach out to our support team and we'll investigate the issue for you.