I am using Windows 10, latest Teknoparrot and my steering wheel is based on Arduino Leonardo with EMC utility driver, it would be interesting to do these tests if you can send me the newest version I will be grateful to test and inform you the results.
About Initial d 8 errors, it was caused by a setting in my steering wheel driver. The driver applied some filters to the effects and it generated some kind of conflict, I reduced these filters to the minimum possible and the game worked perfectly. The Outrun error happened because I kept SDL22.dll and opengl32.dll in the game's exe folder, I removed these files and FFB started working perfectly in the game, although my steering wheel buttons are not yet recognized by FFBPluginGUI miscellania / inputs settings, but are recognized by the game and normally configured by TeknoparrotGUI.
In Daytona Chanpionship USA the buttons are not recognized by FFBPluginGUI miscellania / inputs settings nor by the game, the curious thing is that when I close the game the steering wheel moves to one side and the other side. The steering wheel only works in the game if I remove dinput8.dll, the gear shift buttons work, but the buttons configured for vision change don't work I don't know why. I think I caught a bad dump, I will try to download another version.