Same for me. I believe that the meaning of the advanced settings is more to deviate from the original amps or experiment. I try to stick with Pre/Pwr tabs.Seriously?
Didn't need to adjust anything after installing 9.
Maybe because I keep my amp blocks pretty standard. Just like on a real amp I restrict myself to Drive/Master/BMT/Presence/Depth/Bright. Sometimes Fat or Boost, or Low Cut in the Cab block, but that's it.