Tried these and merged them with your in game settings posted earlier and it was a nightmare for me. So I reduced the in game settings to max torque = 5 and sensitivity = 4 and it felt absolutely great to me.
I think your in game settings are causing the problems, try setting in game to:
Simulation
POWER steering OFF
TORQUE 5
Sensitivity 4
Then those settings above of the ones I posted earlier
That said, GT6 defo has some feedback issues. I've tried loads of games and in my opinion GT6 is the worst force feedback "sensation' out of them all. It may be the most "realistic" or technologically accurate, but it feels like **** on occasion and I get better force feedback consistency with other games. They are smooth as butter, but perhaps not the most detailed or accurate. I think GT6 has some serious flaws with its FFB mechanism. But that's just my opinion, which is not based in any fact, technical knowledge or such... Just playing the game side by side with my v2 and enjoying 1 gone and not the other... But I think your wheel may be ok, I think GT6 has a lot to answer for.
Chsnge those in game settings to above and let me know how that feels for you as I'm curious to see if this is GT6/Wheel hardware or software related.
Also, question for killdozer, you mentioned earlier to test if a wheel spins freely, mine has some friction and isn't exactly loose or free spinning, I also notice that when I turn left I hit the limiter without warning, but when I turn right I get a buffer before I hit the limiter... But how much should a wheel "free wheel" as mine doesn't really free wheel at all? I can spin it if I give it a good spin, but it slows quickly. I assumed that was normal, but after reading your post it sounds like your saying to wheel should be loose/free spinning or have I got the wrong end of the stick?
Also, I tried to use my wheel with sega rally championship model2 emulator and it keeps pulling fully to the left and locking up, has anyone sucsessfully got this working with Daytona, sega rally etc and if so, could you share settings. I'd love a day or retro racing