Yeap, Its function can be described, as "hit or miss". It doesn't work when the UNISON is involved.For instance, when you set the phase distortion (both amounts, there are two knobs) to around 300, there will be a random weirdness regardless the Key sync. Same thing applies to wavefolding. In others words, Pigments is missing a proper phase retrig option. And also phase offset option for oscillators would be cool - you need this when doing percussive sounds.