An actual serious question:

For me the optimal step size found so far (`step_size_bar`

) during tuning steps always follow the same trajectory for all models I’ve seen/tried. Namely that is dropping straight to zero and then raising slowly up to a (hopefully) stable point (say around 0.8 for example).

Those with lots of experience; is this normal?

I tried setting `nuts_kwargs={'step_scale':1.0}`

to help the step size converge to 0.8 (which seemed to be best for my model, but again it just drops straight to 0 at start of tuning anyway so doesn’t improve the time to become optimal.

Thoughts?