Good afternoon Fish!!
I have one hive doing the same as you describe: queen laying non stop, hive full of bees. One hive out of 17 that is expanding. All other hives are slowing down, as the nectar is scarce and all hives are getting ready for winter. That is all but the one hive as you described.
My plan is to remove a frame of brood and give to a newly created 8/30 nuc. In my area, sept swarms are actually absconds and the swarms are weak, stressed from whatever caused the hive evacuation. To late in season for me to split this over crowded hive. So like I said, remove a frame of brood and just keep an eye on this particular hive.
Georgia has a much warmer climate than my area so I will leave swarm issues to Jim (sawdust) and others of similar climate to yours. An inspection should reveal info such as drone brood which is first step of swarming, then queen cells. An overcrowded hive is a good problem to have. Maybe you have an outstanding queen and no action is required.
Van