maybe an fx aid... it has both bit reduction and some lo-fi algos...
or just get a noise source and mix a little in either to the audio or whatevers envelope you are using to open the vca
-- JimHowell1970

That's kind of what I'm trying to avoid here, I thought of that way, with an enveloppe follower and noise source, but that's require a lot of modules and a lot of patching.

Not really... it only needs a 2 channel mixer & the noise source on top of what you already have (& you may already have the mixer) send the envelope from the black sequencer that you are using to open your vca and send it to a small mixer instead, also send the noise source to this mmixer, send the mix of the envelope and the noise to the vca instead of the envelope...

& both a basic noise source and plenty of basic mixers are kind of useful in the context of any modular synthesizer...

"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia

Utility modules are the dull polish that makes the shiny modules actually shine!!!

sound sources < sound modifiers < modulation sources < utilities