Hello, I'm trying the last trunk (r6569- 12-3-18) and I found some problems in the circuit using OSG. I recorded a video:
https://youtu.be/3BgZwbo1k2k
In minute 3:57 and 4:12 you can see Mountain walls in the middle of the track. In minute 3:24, it seems that Speed limiter is activated when you pass across the cambered curves.
I found another error. Using OSG, if you select a Monoposto America Car and this track, the game crash to desktop