Q: Envelopes send messages continuously

[v3.0x] When an VST Parameter envelope is active, messages are sent continuously to the FX, even when the Transport is stopped or the envelope is not changing value. This must be adding processing load as the FX has to handle each message. This could become significant if there are several Envelopes. I can understand messages being sent when the parameter value changes but not when it is fixed. Can someone clarify if this activity is by design and, if so, what is the reason for sending the messages?

Anyone ... ?

.. and in Kontakt 3 I get bolts of lightning in the Automation panel for each Envelope:

that's interesting behavior. very inefficient, no?