The recall fix wont/shouldn’t effect this.
This noise only happens when using video input? What does it sound like (high/low pitch)?
I haven’t tried hooking up this type of computer loop with audio tbh but…
Definitely power Hypno separately,
Try to isolate the audio interface if it is bus powered or the power of the front usb hdmi adapter.
Do you have any powered usb hubs to try on any of the ends?
Also be careful running HDMI/USB wires over audio cables, they contain high speed switching signals and will likely cause interference.