Hi @albertadam,
I have changed cron_statement and start_delay columns of the saleOrderFeedJobTrigger cronjob as shown in below screenshot. After the change I could see the sync of the lab orders to ERP took less than a minute. You can find the cron job in quartz_cron_scheduler table in openerp database.
you can change the cronjob as per your requirement. Hope this helps.