Yeah that's a bit ---steaming pile of meadow muffin---. Sega was renowned for terrible ports, but this wasn't even a port, as I understand it.
It does have analog steering though, so I don't know what problem Isamu was having. The patch out there is just graphical, rom what I can see. I just bound to my wheel straight away in the feeder app. Not sure about anaog acceleration though, but that's not so critical. And the gears seem really jumpy, shifting up and down like lightning if you just hold the button on. Easy to skip over a few gears when all you want is a single up/downshift. More lazy design. Autohotkey can probably deal with that if needed though.
All that aside, it's got a whole huge wad of blue-sky fanservice going for it, so I think i'll have to set it up on my cabs. Totally gorgeous.