I’ve checked by entering your params manually. No fallback was activated, and the scaling limit was not reached, either.
The log:
scale_toe: -0.773515, scale_shoulder: 334.205383
need_convex_toe: 0, need_concave_shoulder: 0
The curve has the kink (blue). The other one, where you used a higher power value, is much smoother (red):
The ‘scale’ values are also a lot lower. From what I have seen, they are usually at most in the low 2 digits, usually – that 334 is already high. The original curve demo at desmos does not allow power < 1.
scale_toe: -0.688216, scale_shoulder: 0.603477
need_convex_toe: 0, need_concave_shoulder: 0
BTW, the original documentation of the params are available here: SB2383-Configuration-Generation/README.md at main · sobotka/SB2383-Configuration-Generation · GitHub
Here is the curve with params toe/shoulder power = 1, linear slope = 2.4 (using your relative exposure settings):
