I am using your plugin with a TX-NR515. When I turn the TX off (main zone) by setting the power device in HomeSeer to off, it always seems to bounce a few times. The HomeSeer device will immediately switch on then off a few times, ending with off after two or three seconds. This makes events that are triggered by the unit turning on or off a pain.
I am sure that the TX is actually sending or responding with on/off a few times as the device status is reflecting, because I had the same issue with the other plugin that I was using on HS2. I wonder if there is some way you could filter this out since you know that you just sent an off command to it, without delaying the status updates too much when someone presses the power button on the receiver?
(Turning the TX on or off via its button or the IR remotes does not cause multiple on/offs.)