Hi there everybody,
I don't know if the issue has already been addressed, but I'll tell you my short story and a simple solution.
After the latest update by S397 and the issue with no ai custom skins loading, I resorted by loading every single one S397 car after track loading, in the standings menu. This finally gave me full custom virtual drivers and skins, but a new problem emerged with the game crashing after a few minutes of driving. Tried to lower full number of cars, lower down my graphics, driver update and fine tuning, nothing changed, S397's updated shaders (especially Oreca 07, I have almost all the RD IMSA skins installed) systematically brought me to ctd.
SOLUTION: simpler than I thought, rolled back to v1111 release via Steam overlay (right click over rFactor 2 -> properties -> beta -> select version on the scroll-down menu), everything seems to be working fine now, virtual drivers and skins loading correctly, full 42-45 cars grid, high-to-full graphics, 15 laps+60 minutes simulated with no issues, no slowing down, no ctd, no discernible graphic reduction with the loss of the update.
I searched for a while with a lot of time lost for this very simple solution, thought that was useful to report it here.
Not the moment for cooler new shaders S397, I'm fine with a stable release, but I still got faith in you!!
Cheers,
Will