Is there a post or blog article that goes into the technical side of the Kasa integration?

[kevin1]

Best info here:

Smart plug power data glitches

TPLink and Wemo work differently on the network. Wemo uses a separate HTTP transaction to fetch the current wattage. This is slow and generally an extremely inefficient way to get the ~16 bytes of information which we actually need. Having to do this every few seconds contributes to the overall latency of your network and can definitely saturate Sense’s wifi connection with enough plugs. TPLink has two ways to fetch the current wattage: TCP, UDP unicast and UDP broadcast. UDP broadcast is t…