Major regression after a week or 2

With both 12.6.3 and 12.6.4 the first week after the vehicle got it's update it drove amazing. After a week both times (in very different weather) it started driving awful, like 3 year old playing crazy taxi.

Das has been reset, recalibration of cameras through service mode and the service tab and it doesn't get better. Shakey turns, phantom braking, hard braking on highway, stopping at every single cross walk, almost driving off the road it all happens and I think it's extraordinarily weird it has happend around the same time on both updates.

Ap computer temps are good around 40, and it can happen when the vehicle is cold, warmed up, after hours of driving it's all terrible. The only thing that was constant is when I had 12.6.3 the only thing that fixed it was the update to 12.6.3 second push, and now the same thing has happened with 12.6.4 after having the update for 8 days.

Any ideas? Tesla service center near me doesn't have an idea from what they can pull from onboard data.