Glad to hear that's worked for you. I just launched GT7 and after a week of it working fine I'm getting no Force Feedback today. I tried what you suggested (although I didn't have Auto Drive switched on anyway) to no avail.OK. Mystery solved. Having uninstalled and reinstalled GT7, the issue remained.
Going through various people's settings, all to no avail, I stumbled across a setting that changed my FFB operation.
Start GT7, start a race, pause then go to settings- Assist settings-Auto Drive and turn it off. Then adjust Controller settings-Trigger (P1) to 'off, scroll down to Steering Force Feedback and adjust Max Torque and Sensitivity to suit yourself. All now OK.
Thanks everyone for the suggestions.
Now my nights are longer.
Just our of interest, have you updated your DD Pro firmware to activate Full Force?