voke254
Fetch less emails at a time. What I think is going on is your system sometimes can’t process all 8 emails within 1 minute and another cron job fires, picks up the email(s) that aren’t done yet on the first one and creates a duplicate ticket.
Typically duplicates are caused by multiple crons running at the same time or if you have a cron job running and Fetch on Autocron enabled. You said autocron is disabled so it has to be a case of multiple cron jobs.
Cheers.