Have read on the grape vine that between a Windows and RR update DD wheels have been having issues, check on the S3 Forum, several threads with workarounds I believe, not having a DD wheel myself I've not paid too much attention.
Are you using the RR AccuForce preset? You may try renaming your old one and start with a fresh controller profile to see if that helps. I've had to do that in the past.
Also, be sure that you try reducing the Steering-rack forces to zero in RR, as they can produce very erratic FFB behavior with DD-wheels. Increase the smoothing and add some friction and/or Fluid Dampening to tame oscillations and reduce any looseness around center (or notchy feeling around center). A small amount of RR Center-spring effect might help with that too.