According to this [drupal.org issue](https://www.drupal.org/project/drupal/issues/2733675), MySQL performance can greatly be optimized when we add ``` $databases['default']['default']['init_commands']['tx_level'] = "SET TRANSACTION ISOLATION LEVEL READ COMMITTED;"; ``` to the settings.php file. We should add that to the default deployment with Ansible and also to the Docker4Drupal Composer plugin.