I'm finding it fun.
The only problem I'm having with is the stupid penalty system even on reduced, I run wide at the exit of a corner and it says I'm cutting it, so it takes multiple attempts to do 1 timed lap
and at Bahrain, Chandhok hit me from behind on the 1st lap and I got a 10s penalty, I didn't even know why I got it without checking the replay at the end of the race.
About the AI timing thing, I just did a 30% race at Melbourne, I was running 11th just ahead of Sutil and behind Kubica, Sutil pitted quite early on lap 5 or 6/17 and
when I exited the pits (13/17) i was right behind him, passed him and then caught and passed Kubica (who pitted around the same time as Sutil).
I don't think Hamilton pit though because it never said he did and he led the whole race :/
Some good things I've noticed are the crowd level increases over the race weekend, the adjustable wing thing actually works, there is a noticeable difference between the
dry tyre types (at Aus i caught Kubica because he was on old hard tyres and I was on new softs) and there is time taken out of the sessions to change engines and repair stuff.
BTW I've never had a puncture (damage and tyre sim are on) and have never experienced the pit bug, but that might be because I change the race strategy.
lol at people already modding it when CM said it would be unmoddable :D