What is the packet size for the cnmaestro management?

Someone know what is the packet size average for the cnmaestro management polling?
I am curious how much is loaded a Internet link for a large deployment or with connections with low Internet bandwitdh for cnMaestro in the cloud. Some customer are looking that they have Internet connection but the devices look offline in the cnMaestro Cloud Server. If every 5 minutes the cnMaestro does the polling, how many retries does to put offline a devices, or if exist some parameters in devices that put priority for https management putting always first the cnmaestro (https) packets first in the queue.