Logic Pro 9 Automation Resolution


Is it true that automation of all knobs on 3rd party plugs in logic 9 is limited to 128 step resolution? Does the 128 step limit also apply to automating the faders in logic's mixer? Am i just doing something wrong? I am trying to automate a HP filter sweep in Reaktor and at this resolution it does not sound smooth. This may be one area where pro tools is still better.