For a while now I had the issue that my DFGT would not automatically change wheel lock depending on car, and the setting in the car setup was grayed out (N/A). Currently I have windows 10, newest driver, but the same problem occurred in windows 7. Finally I found the problem: I have the board of a Wingman Formula Force GP plugged in for H-shifter and clutch, and windows assigns it ID1. When I unplug the Wingman, DFGT takes ID1, and the automatic wheel lock works as intended. Then, if I plug the wingman (no matter in what order) it again takes ID1, and the wheel lock doesn't work on the DFGT. I couldn't find a way to force windows to change the ID assigments, and also wheel lock works fine in Automobilista and Assetto Corsa.