That setup is what I was running on the Pitwork Z. It's more or less a safe starter setup to create a stable handling car. If you're looking to maximize for speed, you're going to have to live dangerously and loosen it up a bit. Which means you're more likely lose it from time to time.
You times are moving downward though....quite an improvement for where you were at the start.👍
DFP vs. Dual Shock II
In my opinion the drawback with the wheel vs. the hand controller is mostly in steering time. With all that steering range 'lock to lock' in the DFP, it takes more time to change directions and to make quick steering corrections....with the hand controller it's just a tap of the thumb to steer and correct. It's potentially a much quicker response time.
This is especially advantageous on tight busy tracks that require lots of quick direction changes and corrective steering. On long tracks with flowing smooth turns and long straights......the advantage shifts back to the DFR.
Also on tracks driven with higher powered cars that require feathering the throttle in acceleration zones, the advantage favors the DFR. Of course, your skill in choosing the best lines through turns that reduce the need for excessive steering or braking input and allow more time at full throttle will often make the most impact on improving your times.
That's my observation on the subject.....others may view things differently.

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I going to try a few more cars during the week. I'm sure I could pull a few tenth more out of each one if I fine turned my setups and spent more time with each.