I considered this option to better match the R comp tires (or slicks) with the suspension calibration as our cars are tuned to work with street tires (not like the Z07 package on the Vettes that could work with the Cup 2s) . However, when OEM setup comes with more aggressive MRC calibration and sticky rubbers they also change the spring rates, stabilizer bars, bushings..etc, In other words, change only 1-2 things in the system in the equation may not be enough to take the car to its full potential. The reason why I now consider the Multimatics (full ZL1 1LE kit actually) now
I just don't like the idea of having a suspension with more aggressive damper settings while leaving the spring rates and others things unchanged.
When it comes to suspension mods, I am surprised when people claim that they can feel the effect of the smallest change they make. Say for instance a small brace under the car ! I have been tracking my cars for years but I still cannot tell the difference on those small changes unless it's something really noticeable (annoying understeer, rubbing etc) Maybe I should have my butt dyno/gyroscope checked because I cannot tell the difference
I see my lap times fluctuate even more than a full second on a different sessions on the same day so that half a second "improvement" can be anything : worn tire, ambient temps, confidence level, or discomfort level due to burrito I ate a few hours ago