I will note that the amount of regeneration has never been entirely linear from day to day. Taking out the variable of charge state, I have found the car tends to regenerate brake less at certain times. Or conversely, times when it seems to regain some of the braking force, which it has a number of times after an update seemed to robbed it of some. The variance and lessening in braking force is a minor issue because luckily they have the pedal programed to be super linear always, almost better than a naturally aspirated engine car. This is one of the key reasons the car is pleasing to me.
I have found the car incredibly solid over two years so I have accepted that over air updates are going to constantly monkey with the car and that things will change. To their credit every update has installed perfectly with no glitches or resets, 10 of them now.