I play the CM F1 series (both 2010 & 2011), using no aids, against legend AIs, 50-100% race distance.
I spend most of the time with car setups, and usually get a perfect one, but sometimes it takes more than two hours and 3-4 sets of tyres. When I have the right balance, I am usually 2-3sec/lap quicker than the AIs, for the first half of the stint than I have a huge dropoff, so I have to make an extra pitstop, but by that time my advantage is enough to make 1-2 drive throughs :) I set my car up for very high downforce, “low” topspeed, stiff suspensions, low rideheight, setting the gears to match most of the corners on the track. I brake late as the high downforce helps stopping the car, but becaouse of the low rideheight I cant really use the kerbs. The hours spent with gear ratios help to take the high speed corners flat out, I like the quick direction changes, but I hate the Singapore sling (T10-13). I am pretty bad with the tight corners as I play with a keyboard on PC and it has only two states of throttle, either full power or none, so I cant step on it early out of a hairpin.
I like to overtake in unexpected places, as my setup only allows that, in defence I only have to keep the car on the racing line in the fast corners, but in the hairpins and 90 degree bends, I choose the widest possible line break early let the car behind outbrake me, than power out as early as possible, usually it gets my place back.
This is how I drive, if its agressive or smooth I cant decide, its up to you.