The behavior I was describing is the same as it was before 1.07, the AI is programmed to wait for you, I personally don't want it to wait for me.
Ran another race with a stock Toyota 2000GT, no aids on except putting sports hard tires the car is 153hp in
a two lap race in National B FR Challenge at Silverstone Grand Prix Circuit up against Mustang Boss 302, XKR R Performance, DB7 Vantage, RX7 Spirit & a G35 Coupe, on the last turn before the final straightaway I was on the tail
of the Boss Mustang only to have it pull away on the strait, I came in second. With all of the straightaways the mustang should have pulled out a comfortable lead, as with most of the other cars.
I Basically grabbing the lowest PP car in my garage for a event that's within reason and still getting closer to the front than I would expect.