There’s often been confusion on just how often tweets are sent from your queued matches, so it’s been updated to something that makes a lot more sense.
Previously, your queued matches were sent out at the same rate at which your search was running. Meaning, if you were running your search every 2 hours, then one of your queued matches would be sent out every 2 hours.
Obviously this isn’t enough for most people, as the queued matches list can’t keep up and send out at a rate fast enough, as you’ll be adding more and more items to your queue over time faster than they can be sent out.
So, the new rate of sending out from the queued matches list, is a flat rate of one every 10 minutes for your each campaign you have running. So for each search that you’ve setup, up to 6 tweets per hour will be sent out from your queue.