Just chiming in to say that I’m still experiencing this problem and don’t have any update. The last I heard is that Eventide support is looking into this issue, but they have not been able to fully replicate the noise issues that I’ve described and tried to capture in video clips. My impression is that this is not yet seen as a widespread problem.
I’ve had a Strymon Volante on my pedal board for a couple of years, and I bought the H90 with the expectation that the Head Space algorithm would cover the same ground and allow me to consolidate my board. Unfortunately, I’ve found that the noise in Head Space renders the algorithm mostly unusable. Hopefully that will change at some point.