thanks tbskoglund!
It works with more boost (like +7dB approx)
I’ll check all my gain structure, but as I am already  hitting -6dB on that VU I’m already quite near the top
Also, to mentiuonb that my PitchFuzz comes before the Ultraswell (with a -5dB cut on its i/o settings) then Ultraswell again doesn’t react
Going back to my other post (about saving i/o settings inside the Algo preset regardless of Bypass Tails)… this still has me wondering.
If I find out anything more out I’ll let you know