Dampers stiff on the front, soft on the rear, soft ARB at the rear and hard on the front, Wing cranked up to highest, springs not too nervous, but also the same in difference, high TC values, also tried low, for less floatyness, front brake bias and so on...basically everything, that should make it pretty shitty to turn in exit and entry. For the first couple of minutes, it is okay, even if it is not really competitive, but after 17 Laps Road Atlanta, with pretty consistent driving, without much pushing and fighting, it becomes loose. (M8)
Le Mans with the Porsche, ironically in the porsche curves is drivable for three laps, than it will become "not that fun", tyre compound doesn't matter. Solution is to use the same approach as above, but especially with too much wing, you will get punishment for your acceleration and top speeds. More fuel helps, as expected, to make it more calm under braking and weight transfer, but this is not a solution, if you go full "party mode"
I will try, to fiddle with tyre pressures, and toe, different from what i was using before, maybe lowering pressure a bit and giving a bit more rear toe in...if it will not lead into high temps.