Recommended Car Amount: 420 (dont spawn cars nearby) access traffic planner settings via object inspector -> tools -> traffic planner (ingame).
YOU HAVE TO OPEN OBJECT INSPECTOR INGAME TO SEE THE CARS
> the traffic.json and surfaces.ini go into Program Files (x86)\Steam\steamapps\common\assettocorsa\content\tracks\soyo_daikoku\pa\data You need to install/activate traffic planner first, see tutorial.