I recently had the MCU1 to MCU2 upgrade on my 2015 model S as the centre screen spent 95% of the time frozen and not responding to touch. Now the radio streaming, spotify, maps etc only work when they feel like it and in no particular order ie radio streaming working but maps just blank then 10 minutes later maps working but streaming radio and Spotify not then nothing working for the rest of the journey. The LTE signal can be any number of bars during this, usually 4 or 5. Tried all the resets including full power off. Doesn't happen in the same places either - anyone having similar problems or know of a fix. Getting cheesed off listening to the suspension crashing over S. Wales' roads for hours and hours, Thanks.