I’ve just got back from six hours driving today in mine - nothing exciting, sadly.
However, I too struggled to get the HVAC to work consistently to a set temperature. I noticed after a while that when you turn the temp dial, it shows the temp (in degrees) on the central screen for a few seconds. However, pressing the Auto button, didn’t hold the temperature. It just kept blowing cold air. Switch off the Auto button, and it blew hot air - without changing the temperature.
Would love to hear if anyone has mastered it.
I also had a few software issues, with a few spurious warnings (Climate Control, PDC, a few others). Turned on and off a few times, some persisted, others cleared. Then I tried switching the ignition on and leaving the car for about 30 seconds. Seemed to go through all its checks. Then I started it. No more spurious warnings, for the three hour journey home.
Might be worth giving it a try and see what happens.
Finally, I have zero vibration at any rpm. Just smooth all the way through.
Hope this helps