Isn´t the rear ride height lower then the front (on default settings)?
If so switch it (front a bit lower then the rear).
And make the Aerodynamic settings: front max rear: Number of front plus 15
Stiffen the front antirollbar (front 5 rear 4).
Toe: front -0.20 rear: 0.00
Camber: f 2.5 r 1.5
LSD: 20/30/12
This where my first changes and now i like the R10 TDi