Problem: The client is experiencing server overload issues on their website when there is high traffic, specifically linked to slow database requests involving the WPML plugin. Solution: We recommend updating the server's PHP and MySQL versions to improve performance and potentially resolve the issue. Specifically, upgrading to PHP 8.0 or higher (up to PHP 8.2) and MySQL 8.0 or higher could help reduce the load. Additionally, clearing the cache and transients might temporarily alleviate the problem, as it did previously for the client.
If these steps do not permanently resolve the issue, or if the problem recurs, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If the problem persists, please do not hesitate to open a new support ticket with us for further assistance. You can do so at our support forum.
