Is there a maximum number of variations that I can display on the shop page?
Normally, variations for each product load only on individual product pages. Displaying variations on the shop page means that all of this data needs to load on the shop page, which doesn't normally happen in WooCommerce.
The WooCommerce Express Shop Page plugin is intentionally designed to avoid any performance issues, even with a large number of products or variations. It accomplishes this by using AJAX to load variations asynchronously, after the rest of the page has loaded. This method ensures that the plugin won't negatively impact your site's loading speed.
If searching the knowledge base hasn't answered your question, please contact support.