A slow checkout page is rarely caused by “the server” in the abstract. It is usually a measurable condition: PHP workers are exhausted, database queries are backing up, disk I/O is saturated, or a traffic spike has consumed available memory. …
A storefront can fail at 2:13 a.m. while the server still appears healthy in your hosting dashboard. The homepage may return a 200 response while checkout is broken, a database connection is timing out, or a security rule is blocking …