Hi @Waggie, thanks so much for reaching out about this!
The update time for the Professional plan should indeed be 2 mins. Although generally if there’s any issues on the apps end, at the time that the Zap attempts to check for new information, that could potentially cause a delay in them sending back the new information to trigger the Zap. Which can sometimes cause a delay in the Zap being triggered.
That said, I did some checking and found that there’s a bug reported for the New Spreadsheet Row and New or Updated Spreadsheet Rows (Google Sheets) triggers, where we’ll sometimes seeing a delay in triggering of around 30 mins. And as you experienced, this happens regardless of the Zapier plan’s update time settings. So I’ve gone ahead and added you to the list of affected users.
I don’t have any estimate on when it will be resolved by but we’ll send you an email notification as soon as it’s been fixed. And in the meantime, we’ll be sure to post any updates or workarounds we come across here! 🙂