Sharing my DDPro (8nm) setup, GT7 only. I tried various settings leveraging many popular YouTubers, but using setup similar to Abarth_71 currently (thanks Abarth_71)
FFB 90 (between 90-100, preference thing)
PEAK
NDP 10 (I use light McLaren V2 wheel, and found this to be ideal for me)
NFR 0
NIN 0
INT 1 (when 0, there's too much noise in the wheel, causing distractions to me than proving meaningful feedback)
FEI 100
FOR 100
SPR OFF (it does help bringing back the wheel to center outside the race, but not sure if it does anything while racing)
DPR OFF (haven't noticed any impact to this in GT7 when it's 100)
In Game
Force Torque = 4 (used 5 for the longest time, but I don't see major help from stronger force in saving oversteer, at least for me)
Force Sen = 7 (used between 3-7, with higher setting if "feels" like it masks understeer little more)
Controller Sen = 0 (subjective, tried 0-10, but directly or indirectly I get better time with 0)
CSP V3 pedal:
PU foam + 13mm red + 12mm red (softest elastomer setup available)
Brake force = 68 (I use lower LC force than most I'm sure, but it's more comfortable for me)