I think I figured out what has changed!
It is indeed the ABS. Now, on ABS default, the amount of ABS you get increases if the car is not settled when the brakes are applied. In other words, maximum braking is achieved when there is no steering input. If you try to steer while braking, you get more ABS intervention, hence less braking.
Throughout this week, the harder I tried, the slower i got. Once it dawned upon me that braking in a straight line was more necessary now, my times immediately got better.
There is more emphasis now on braking in a straight line as you enter the turn and then bleeding off the brakes as you turn.
I'm not sure if this change applies to ABS weak, because it always required more care while braking, but it sure seems like there is a less of a difference between the two settings now.
Since people are literally spending hours and hours prepping for FIA, I think they ought to get some of the clean good players out of FIA practice lobbies by not announcing the fuel and tire settings until the hour of the race...
Whatever, to each his own. If people want to spend tons of time practicing, let them.
Clean/good is all down to the current iteration of the penalty system.
Case in point:
I raced this morning. A guys dives down the inside at T1 Interlagos. He does not complete the pass and does not get ahead of me. He is on the inside of T1, which of course, leaves him on the outside of T2. I take the apex of T2, which as we all know, will dump you at the inside of T3. He stays out there, grazes me, so much so that there is barely a sound, and he crosses off track. I get a 1 second penalty.
Later that same race t11? (the last tight right) I get slammed into hard and spun around while on the normal racing line by some guy lunging for the apex and off line. I get dumped to last place and he gets no penalty. He was nice enough to stop and let me pass again, but that's beside the point.
The current implementation does NOTHING but reward people who are doing the wrong things. Driving dirty will get you better finishes.