Hi @niclasto,
I’ve examined your site, and have noticed a few things which are slowing down your first-use experience.
Super Cache is great at making WordPress itself run fast (by bypassing most of its internals) while rendering your page. However, it appears the slow-down is in the way that your site serves static resources. These are things like JavaScript files and CSS Files, which are loaded directly after WordPress has finished running.
First, I have noticed that your site does not support gzip compression. When loading static assets on your website (such as JavaScript files), they are not being served compressed.
Here are some example resources which are not compressed:
– wp-includes/css/dist/block-library/style.min.css?ver=6.1.1
– wp-content/plugins/stackable-ultimate-gutenberg-blocks/dist/deprecated/frontend_blocks_deprecated_v2.css?ver=3.6.2
– wp-content/plugins/tabs-responsive/assets/css/animate.css?ver=6.1.1
It appears your site is running on an Apache web server. I recommend that you contact your hosting provider, and ask them to set up mod_deflate on your server to enable compression for your static resources.
Second, I have noticed that your site appears to take a long time to serve static resources when multiple are requested simultaneously. For example, during a normal page-load:
– wp-content/plugins/wpglobus/includes/js/wpglobus.min.js takes 1.5 seconds to load,
– wp-content/plugins/q2w3-fixed-widget/js/frontend.min.js takes 1.09 seconds to load, and
– wp-content/plugins/ajax-search-lite/js/min/plugin/optimized/asl-wrapper.js takes 1.49 seconds to load
However, when I load any of these URLs individually, they load rapidly. To illustrate what I mean, I will focus on “wp-includes/js/utils.min.js”:
– During a regular page-load, this resource takes 1.57 seconds to load; 961ms of which are spent “waiting for server response”.
– When I load this resource individually, it only takes 457 milliseconds to complete.
This suggests that your web server may be either mis-configured, or running on a system which does not have enough resources to properly support its operation.
I recommend that you also ask your web hosting provider about your web server setup, and why it is taking a long time to serve static resources during a normal page load.