So have to be careful how I phrase this...
Just gone back and done some more Gr3 laps in the Lambo and the McLaren and I personally am warming to the braking change, it's has less fidelity in the control but the trade off is the initial bite is harder and the ABS is doing a lot more as you trail in giving the same feel as trail braking does but with a bit more agility.
Now the careful bit....
My driving style tends to fractionally over turn the car in to use the small understeer slip to alter the exit angle a fraction, previously this resulted in a slight vibration...
The new physics have this overly aggressive weighting that shakes my shaft to the point it's so audible it sounds and feels like all the bolts are coming out. It is rather unpleasant which historically shaft shaking hasn't been....
You can drive round this my not inducing understeer or locking the brakes with steering angle/load on and it's smoother but not ultimately faster.
Got within .2 of my best time in the 650 and feel I can beat it but that is very much more down to my ability and not getting close to the cars capability rather than physics or BoP changes.