They tweaked some graphics rendering stuff in the last update.
I wondered if you can turn up a setting or two as a result (for those who are not at max settings), and you can!
I turned up AA to max, which was one level higher. I was also able to set reflections to max, but had to keep static rendering of those reflections.
It almost let me put AF up one level too, but there were some times with lots of cars on screen where things went south.
A great test track for frame rates is Silverstone (full), where the entrance to the main straight after chicane seems to make my PC drop a couple frames, even when everything else is smooth. That tells me it's one of the most complex scenes you'll ever need to render. I accept a few fps drop there from 60fps which is all my TV will take.
