Hi there,
Thanks for reaching out.
I checked your website, but the loading speed can be affected by several factors, so it would be difficult to determine the exact cause from the frontend alone.
Since you recently updated Joomla and SP Page Builder, please make sure you have cleared the Joomla, browser, server, and CDN/LiteSpeed caches, if applicable.
You may also find our following guide helpful, as it covers several common ways to improve Joomla website performance:
Ultimate Guide to High Google PageSpeed Score for Websites on Joomla
If the website is still slow after clearing the caches, please let us know. We can then investigate further and determine whether the issue is related to SP Page Builder or another part of the website.
Best regards,