You have to raise the suspension a little its constantly bottoming out on deep forest and those type of tracks, Every track I race with this car I am +5mm Front and +6mm Rear (I like the rear slighly higher on most cars gives the rear suspension more travel less lively)
But I am +10 front +12 rear for deep forest and bumpy , High down force tracks.
Also 3 degrees negative camber on the rear, and just 2 degrees negative on the front, there is no weight in the front of the NSX so there is a lot less flex, so more camber on the front is worse in a MR car
Also for the tight tracks, go into chassis, and Crank the front down force to max, and put the rear on to medium, keep experimenting in practice mode, I am 30% max on the rear down force so its 15 or 20 out of 60 clicks, but front is on 45 Max for tight tracks
also adjust your brakes, put the front on 7 and the rear on 3 , if its still locking on down shifts, go to 2, then 1, after the above suspension changes its quite nice.