Scheduled an appointment earlier for remote data analysis of bugreports I saved in the two weeks before.
Preliminary diagnosis was that there could be something wrong with the front radar; I was asked to bring it car in for a physical check of the radar and a possible 'drive cycle calibration'.
After few hours they got me a loaner S, as it would be taking longer than expected. Asked for an update few days later, but diagnosis was still inconclusive. Last thursday I was informed a computer was on special order, so I'd guess its a faulty HW3 chip...
Will try and ask for any details if I pick it up on Monday. The loaner S was great for AP comparison, haven't experienced the same effects as with my 3. AP was driving rocksolid. Its a 2015/2016 pre facelift model, so I guess HW2 or HW2.5 at 2019.36.2.7. Unfortunately its way too large to park here, so I'd rather await computer replacement with my crippled 3 instead of the S