True, but it's a difference of degree. With a sufficiently complex patch, it takes relatively few voices for Pigments to overload my CPU.
Don't get me wrong…I really like Pigments. It has one of the best workflows of all the complex "kitchen sink" synth plugins. I just wish I could go nuts and freely experiment with all that power without worrying that I'll end up with something that uses too much CPU to be practical. You end up having to make a mental budget and worry about how much every feature costs…for example, the new Jup 8V filter (which sounds great) is extremely expensive, and that cost is incurred per-voice.
I think it still has lots of room for optimization, and hope to see some big improvements there.