I tend to lower the steering ratio because I like to have a more responsive GT3 when I turn my wheel while putting very little angle.
Don't hesitate to raise the steering ratio by 1-2 clicks if you are used to playing with more steering ratio. On the 720S Evo, I recommend not touching.

TC: - I recommend the TC2 to be safe.
    - TC1 if you are good on the 720S

HotLap/Qualifying lap adjustement:
- Front Target psi tyres at the end of the lap 26,7-26,9 
- Rear Target psi tyres at the end of the lap 26,7-26,9
- Front Toe: decrease near to -0,33 if you want more turning OR increase near to -0,22 if you want more stable (it depends on the feeling of player)
- Rear Toe: don't touch
- Front Antiroll Bar: don't touch
- Rear Antiroll Bar: increase 1 click if you want more turning or don't touch
- Rear Ride Height: increase 1 click if you want more turning OR decrease 1-2 click if you want more stable or don't touch
- Rear Wing: decrease 1 click if you want more speed and more turning OR increase 1 click if you want more stable but you'll lose top speed

Race adjustement (advice): Adjust based on race duration. For 15 minutes, you can keep the qualifying setup. For endurance with a 1h/1h10 stint, opt for a slower setting for pure performance but consistent over the duration of the stint.
- Front Target psi tyres at the end of the lap 27,0-27,1
- Rear Target psi tyres at the end of the lap 27,0-27,1
- Front Toe: decrease near to -0,33 if you want more turning OR increase near to -0,22 if you want more stable (it depends on the feeling of player)
- Rear Toe: don't touch
- Front Antiroll Bar: don't touch
- Rear Antiroll Bar: increase 1 click if you want more turning or don't touch
- Rear Ride Height: increase 1 click if you want more turning OR decrease 1-2 click if you want more stable or don't touch
- Rear Wing: increase 1 click if you want more stable but you'll lose top speed
- Front Brake Ducts: it depends on the temperature
- Rear Brake Ducts: it depends on the temperature

My best lap with this setup: 1:58.030 (on a mega lap, there is the possibility of doing 57.8 very high, so you can improve so much my time)
Best lap with 80L: 1:58.987 (average time 59.2 at the stint start /on a mega lap, there is the possibility of doing 58.7 very high)

Good Luck and Have Fun.

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