Well I am certainly not finding it "easy" I managed to get the gold in the first race using a DS3. On the others I just can't get the speed up enough without them disappearing off in to the distance. Not only that but one little over bite on the acceleration and I am off in a spin.
Umm... Don't know if it's cool to say this, but..:
ASM might be your friend here.
I'm not hardcore, by any stretch, so I couldn't see me *NOT* using Racing Softs for the thrill of it. Same with TCS.
So:
TCS to 5
ASM On
ABS to 7
Racing Softs
Also:
Brake Balance - Front @ 4; Rear @ 1.
The brakes are that good, you don't need to pound them, and locking up the back (even with ABS on) is going to kick you out a little.
Also, with the Brake Balance set low to the rear, you can use a digital (R1/L1) button for braking, rather than an analogue (L2) one. Lot quicker for getting on and off the brakes.
Check your transmission as well. Can't remember off the top of my head, but fairly sure I dialled it down for all 3 tracks, and only recall bouncing the limiter briefly on the Suzuka S/F straight.
ASM can feel a bit restrictive when it cuts your power, but at least you stay pointing in the right direction.
^^^All the above might seem the soft-core option, but at least you'll get the wins.
And since the Ferrari F1 SC offers the second highest XP/min in the Game, it's going to be worth repeating it as often as you care during the availability window.
So win first with driving aids; then dial them out as you improve.