I developed this strange setting after I was fed up with how slow in response GT3 was. So this setting is maybe crazy and not for everyone, but allows me to eliminate to some degree what I don't like on GT3. Until I buy better wheel that is.
Note that my wheel firmware is 756 and driver version 144 so it can feel different on different version.
Wheel drivers: 900deg and 33% damping. Still experimenting with it because I used to use 20% damping in car setup menu and 100% in drivers, but we don't have that option anymore.
In AC: gain 100%, filter 0%, minimum force 11%, kerb effects 20%, road effects 0%, slip effects 0%, gamma 1, filter 0, speed sensitivity 0, brake gamma 1 for clubsport pedals.
Wheel menu: sen 900, ff 100, sho 100 (doesn't matter), dri 5, abs off, lin 0, dea 0, spr 4, dpr 0.
I use different FFB values for each car in car setup menu with the help of Force Feedback Clipping meter app. My usual test with a new car is at Magione and it works more or less for every track. So for example I use 119% for BMW Z4 GT3, 141% for 458 Italia and 115% for MP4-12C. These are quite high values I know, but after last two updates I had to go higher with my FFB settings up to 20% or so and watch FFB clip meter closely. It has also something to do with that high DRI value I use.
This setup has some drawback though. Wheel oscillates when you leave it on its own when driving. But I don't mind, got used to it. I can live with it until next upgrade.