So if your on track toggle open the telemetry look to see if your car is hitting max HP (horse power). If not then your setups are bugged. Confirmed still there post 2.0 patch with a friend of mine on PC for example his Formula A only pulling 706hp as was mine.
Not sure if its all cars but you might as well check it out, and see what the max HP is for your car, and compare it to the telemetry.
So went into the garage hit edit setup, then reset setup, then save to all tracks. Then went to a track and bam car has 760hp.
Not only is it changing the HP down, but it seems the grip is changing to when saving.