Note: As of Jetpack 11.2+, the dedicated sync option is available for usage instead. This plugin will bail early if Jetpack has dedicated sync enabled.
By default, Jetpack Sync will sometimes attempt to piggyback on various cron or API requests - causing slowdowns on the shutdown hook. This plugin modifies that behaviour and ensures that Jetpack only syncs on the dedicated cron task.
Add the vip-jetpack-sync-cron plugin folder in your /plugins directory. Then load the plugin either in your theme or in the plugin-loader.php client mu plugin with a call like this:
wpcom_vip_load_plugin( 'vip-jetpack-sync-cron' );
Add the vip-jetpack-sync-cron plugin folder to your /client-mu-plugins directory. Then load the plugin in the plugin-loader.php file with a call like this:
require_once WPCOM_VIP_CLIENT_MU_PLUGIN_DIR . '/vip-jetpack-sync-cron/vip-jetpack-sync-cron.php';