@peter-ostry Yes, uh, well, gee, it does seem that I made an early-on error in imaging what a Log curve is. I was thinking exactly the the opposite, and that may have led me down a long path ...
Here is a sample of the low-breath-pressure issue, played on Sylphyo via Link through the Patchman English Horn sample set, using Kontakt 6 and recorded in Cantabile:
... The critical areas are in the areas (in seconds) of 1-2, 13-15, and 20-22. I initially believed that this "jittering" or "stuttering" was due to 7-bit MIDI, but then got up to speed with modulation curves.
The full discussion of the history of this is on the Native Instruments forum: https://www.native-instruments.com/forum/threads/high-resolution-breath-controller.442309/
So ... I may have to visit this and explore what kind of modulation curves would be suitable if I set the Sylphyo to Breath => Curve => Linear