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.

TC: - I recommend the TC1-2.
      - TC Off if you master the 992

HotLap/Qualifying lap adjustement:
- Target psi tyres 27,0-27,2

Race adjustement (advice):
- Target psi tyres between 27,0-27,2
- Front Toe: decrease near -0,40 > -0,38/-0,36
- Rear Ride Height: 70 > 69/68
- Front Brake Ducts: 2 > 3 (it depends on the temperature)
- Rear Brake Ducts: 4 > 3 (it depends on the temperature)

Good Luck and Have Fun.

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