As a 2017 Model X owner with FSD, I emailed Tesla and voiced my frustration that I am not getting the full FSD experience as I've been upgraded to HW3, but my MCU was not upgraded. Their response is if I want FSD visualizations, buy the Infotainment upgrade. I don't want or care about the Infotainment extras like Netflix or Arcade games. But I do want everything associated with the FSD experience, including the visualizations. When I paid for the FSD, my assumption was and has always been, I get everything associated with FSD. When I paid extra for this feature, I was not told I would have to pay another $2500 to get the full FSD experience.
Yes, the FSD is "functional", but not complete. Since my HW upgrade, I have FSD functionality, but now other features are affected. My maps take forever to load. I get alot of buffering on streaming audio. I suspect that the FSD functionality has taxed other aspects of the car.
My next step is writing Tesla corporate. I suggest that anyone else in my situation also write Tesla corporate to complain. Give us what we paid for.