You're being punished for the hacking attempts of others!
I'm pretty keen to give it a go, but I doubt I'll have time in the next few weeks. I never did get around to nabbing nKPro, either. If I find myself with some time in the next weeks I'll get it and then the tech preview, but I'm not holding my breath.
Hearing that it feels a lot like LFS is very good. LFS was always so good with the FFB...
I had easily noticable input lag at anything under 100FPS. If you're already running minimum settings and vsync off, then all you can do is either wait for optimization patches or upgrade your machine.
The only thing I miss is the steering linearity option. Car doesn't turn at the 240° my crappy MOMO has, so I'm using 500° now, it turns, but too sensitive. It was also reported, so I hope they do something.