CV Out not filtered

[someofthem98]

Have a noise issue on Curve Tracks. If I use a curve different from a DC square, I get noise on this curve even if recording a CV from another module. Can be listened with a sine in a VCA controlled by this curve. Other modules doesn’t have this noise(Malekko quad envelope, Make Noise Maths) It's like pitched noise. Controlled the 18pF feedback loop capacitor and they are correctly working. Can be the STMPS2151 not soldered the culprit (as isn’t available)?

Is this behavior normal?

EDIT: Analyzed the CV on scope: CV outs are like “stepped”