Different methods of updating layout parameters

I want to change the parameters of the audio playback state layout.
Is there any difference in behavior other than the CRC check for the following two methods?

A) Set the TuningPacket with awe_packetProcess().
B)Set the coefficients directly with awe_ctrlSetValue().

If there are any differences that implementers need to follow, please let me know.
For example, different timing when parameters are applied, etc.

Thanks Naomichi