I can't quite place what exactly it is, but there is something immensely dislikeable about Perfection.
Maybe it's the lack of any foreseeable goal, leaving you endlessly cutting through random shapes for no other reason than to get to the next one. Without and end game, scoring system, or any other tool with which to gauge progression it makes me feel like my time is being wasted, abused as if I'm some sort of labrat for a bizarre visualization test.
Or it could just be that slicing up random shapes into a different random shapes is just very, very, very work. It's also tediously finicky in this instance, occasionally accepting a shape that's far from the outline you're aiming for, and other times requiring you finely chip away at it bit by bit until it matches up. For a game seemingly aiming to create a zen like relaxation with no penalties and a clean, uncluttered graphical design, I found myself getting shockingly annoyed with each passing moment I spent with the game (so much so that I had to turn it off after only 20 minutes or so).
Basically what I'm getting at here is Perfection is anything but. It's presentation is aesthetically pleasing from a minimalistic standpoint, and its sound design is suitable atmospheric, but I found it impossible to gleam any bit of satisfaction or enjoyment from the game no matter how hard I tried. The harder I did so, the more I began to hate having ever decided to try in the first place.