User blog comment:CykeP/Mixing Help - Please Read!/@comment-53539-20160408081739/@comment-53539-20160410144934

Don't have the layers set on full volume, turn them down so their fainter.

One of the side-effects of seeking clarity in vocals is you end up with the "loudness" effect. So if your increasing the loudness of a vocal or doing things to get the desired clarity, you may ave to watch it. remember what I said about how some folks don't realize they accidentally do stuff while mixing. ^_^'

https://en.wikipedia.org/wiki/Loudness_war

The engines flaws have been known since V1. The nasally effect is the Vocaloid "noise", the sound varies per Vocaloid and some of the deeper tones end up worst then the lighter ones. I understand why but don't know the science to retell... But turning out nasally is as common as turning out monotone. Unless the vocal is notable or intentionally, it doesn't get noted. =_=