Just did some Formula2 2012 at Malaysia full loop, and the AI (120%) were quite well behaved. Good side by side racing. A few of the usual complaints but they showed awareness.
----EDIT
I had an old version of the F3 Eve mod installed in the comments below...
That was a totally different experience to Brianza 1966 with the F3 Eve, which for me was: restart..restart..restart..restart... just trying to finish one race. Swiping across you, bouncing off curbs and taking you out. And they showed zero awareness in some situations, particularly Parabolica. I was punted right off the track last lap 3 times when I'm braking at worse half a car length earlier than they are . An AI, a long way back but on my line just doesn't brake at all until his right on my bumper which is a long way forward by then of anyone's brake point. And in fact some of the AI braked exactly where I did on those occasions. Made no sense.
Also, exiting Parabolica, I'm in a line of AI, nose to tail, exactly the same path but it's me on the apex at that moment, and then one of them enters from wide and drives straight into the side of me like I'm not there. Several times that happened. Just nonsense.
I know humans do these things sometimes, but this idiocy was relentless, every race.
So I gave up on that track. I'm sure it's possible to learn strategies to avoid it, but i'm not interested in building habits so far off anything I'd do against people.