i had the same problem - tried reboots, waited 1-2 months - it'll work as long as it's not hot and then it would stabilize after a while - seems to be a heat related purple and fuzzy just like your screenshot - I had to have them change it out = problem solved. Luckily I had the warranty as was 800$ without (200 deductible I got a visor issue fixed too).
Same scenario AP2/MCU1 car that was upgraded to MCU2/AP3. I wonder if there's some issue on their end with compatibility?? They should fix this free if a lot of them are affected.