Speed settings for any car:
1) Lower the suspension all the way, and stiffen the dampers a bit.
2) Reduce toe to zero.
3) Reduce all downforce to minimum.
4) At the simplest, move the auto setting toward "wide" until the car is above the redline but below the rev limiter (usually 500 rpm above redline, but it varies by car) when the car has topped out due to air resistance.