In general, you get more of what people seem to call "detail" if you have the in-game setting low, and the wheel setting high. So with my CSW 2.5, 1 in-game, 100 FFB and a higher FOR value gives a lot of "detail" (it was a Z28 video that caused me to try these settings, and he described it as more detailed), which just feels to me like it's going to break the wheel from all the jolts. I don't like such severe jolts, so I have it at 2 in-game, and FOR a bit lower. So you could change FFB and FOR to 100, then take the in-game setting down and see if you prefer it.
DRI off feels weird in the centre to me, I need it at -02 to make the centre feel reasonable, but YMMV with the CSL Elite.
Do the SPR and DPR settings actually do anything? I have those off, but I'd have thought that if they did do something, high values would tend to "drown out" the force feedback generated by the game, as they'd be providing spring and damper effects whereas you want to be feeling things like aligning torque.