Just want to confirm that you've already tried enabling and having your patients enable "Original Sound for Musicians" - this should theoretically disable all noise suppression algorithms, but you will need to have a 'half-duplex' conversation where one person speaks and the other mutes in order to converse without feedback.

After the setting is ticked, it will still need to be manually activated by both you and your patient in each meeting.
Unfortunately, there is currently no "Original Sound for Physicians" option. Had to. 🙂