If you want to play a sim racing game void of any AI issues, there is only one game to play.
http://www.iracing.com/ In iRacing you race other humans not flawed AI opponents. The only problem with iRacing is that it is a subscription service that is not cheap (of course it is cheap compared to real world motorsports) and you have to buy extra add-on cars and tracks beyond the rookie cars and tracks the basic subscription gives you. The tracks in iRacing are 2nd to none (they are laser scanned and super accurate, if there is a bump in a real world track, the same bump exists in the iRacing version) and driving the iRacing cars at their limits is a heck of a lot more challenging than driving these cars in this game.
I am having fun with this F1 2010 game. Yes it has it's issues (mostly AI related), but I have found a nice balance for my skill set. Using the "RDD TrueAI" mod plus the "AI Slow Corner Fix" mod, racing 100% race distance in a Toro Rosso against Legends AI opponents, with tire sim on, fuel sim off in the race and yes (hangs head in shame) my traction control is on ... my races have been good since I re-started my career. I have to fight for my positions, best qualifying so far has only been 10th on the grid (fuel sim is turned on during qualifying), passing my opponents is not easy and they will pass me if I make mistakes. But I am in the races, I am competing for points. 3rd in Bahrain, 6th in Australia and another 6th today in Malaysia using this new combo of mods and game levels. It's not perfect, but it's been fun so far ...