This right here!
I also experienced that the automation for bypass parameter responded ahead of time instead of on time.
Turned out I had only set Accurate Automation to. "Volume, Pan, Sends" and needed to turn on "Volume, Pan, Sends, Plug-In Parameters"
Solution: Set Sample Accurate Automation to: "Volume, Pan, Sends, Plug-In Parameters". [found under Preferences>General]
You may also need to have your Plug-in latency set to Compensation: "All". I am not sure about this, so don't hang me up on it, but it works for me. [Also found under Preferences>General]