We have had a negative experience so far with MCU2. We had it installed about 10 days ago. Within a couple days of install we started noticing strange screen behavior. The screen detects phantom touches. The phantom touches seem to be limited to the bottom edge of the screen. While we are driving the car will randomly turn the HVAC on & will also lower the temperature. It will also randomly turn down the radio volume. This will happen multiple times per minute at times, sometimes multiple times within 10-15 seconds, and then won't happen for 10-20 minutes.
In addition to those issues, the screen has also completely frozen a few times. When it freezes even the double scroll wheel reboot often doesn't get it back. It has taken 4-5 reboots to get the screen to unfreeze. Tesla's theory is that the screen is getting overwhelmed with touch signals that it freezes. We have an appointment for this Thursday but Tesla has said they don't know if they will be able to get parts by then to do anything for us...
Here is a video of the frozen screen:
And this video shows the HVAC turning itself on & then turning down the temperature: