You can use the EasyCron plugin with WP All Import. However, EasyCron is a paid service for high volume and you need to disable the default wp-cron.
You can copy and paste the Execution and Trigger URLs and set the schedule however you need it.
REFERENCE to code change recommendation above:
wp-config.php
make sure DISABLE_WP_CRON is set to true. It’ll look like the line below:
define( ‘DISABLE_WP_CRON’, true )
