It's been two days since I got my early November G05 back from dealer to fix my driver assist warnings. They replaced the KAFAS camera and upgrade iDrive to 2019.35. So far I haven't seen a "driver assistance support reduce" issues. Little iDrive and CarPlay issues seem to be gone.
Only complaint is that the dealer washed my car, and now it has thousands of swirls/scratches
This is my first BMW and had no clue it was common for dealers to do this.