Priority Queue Polling - WoRm
Priority Queued Polling is nice Sequentially, but is even better with Write Once, Read Multiple ( WoRm ). This means that only one "Set" can occur and nothing else, but multiple "Get"s can occur at a time across a device, which could comprise many accessories attached to a device; As is the case with an AirCon.
If you continue to use Cmd4 as previously configured without Priority Queued Polling, nothing changes.