OK, I just did a test. I changed Z3TA's sample rate to 96K and noted that the change was saved to the registry entry Steve identified above. I exited Z3TA and restarted it. Before doing anything, I checked the registry and it was still set to 96K; it had not reverted to 48K, my normal setting.
So, for me, the sample rate is NOT changing between application restarts.
In any case, Z3TA provides NO feedback of what the current setting is, it only allows you to change it via the Sample Rates tab.
You say that things are "too fast" when you restart Z3TA. Could you be more specific please, and provide an example? I'm confused now (OK, again; my lot in life
).