The Discovery channel show offered a good insight. In show 3 I noticed a few things.
1.FX saying something along the lines of he priorities driver feedback as opposed to telemetry feedback.
2. Petter saying that he can't do any thing more with the car. He couldn't go any lower and he had no more damping settings left.

I seem to remember him adjusting the car with the centre console when he set the stage record on Ouninpohja a few years ago.
I think Petter is doing the best with what he has.