I have just done my first full lap... it's not an easy task, either for me or my computer... but it was great fun,
I started the track for the first time with my usual graphical settings, and the framerate was... around 15fps...
so I lowered shadows to medium, track detail to low, disabled anti aliasing, lowered AF to 4x and it jumped to around 40-50fps, with a overclock on the CPU from 3.3 to 3.6ghz it raised another 10fps... so this track is VERY demanding on the CPU side, particularly on single threaded performance (overclocked I5 2500K should be great for playing this)...
the track have many difficult turns, any small mistake and you can crash easily... also the fuel tank of the Mini I used is only just enough for a single lap.
but what a wonderful job from the people that made this track for GPL and the ones that converted! thanks!