...this is me testing AC engine few years ago regarding physics on my old FX8350 @4.0GHz (which is BTW running 2,5x faster then PS4 CPU, cores are basically same), 36 cars AI driven, engine is crashing all time, and slowing simulation... now PS4 vs PC regarding physics calculations was 240Hz vs 333Hz, but even considering this, and a bit less cars (30 in this case) it is too much for old Jaguar CPU... And I doubt that ACC will run lower then 240Hz on physics, and with all that, it is more advanced then ACs. Only thing that is good, ACC uses only GT3 cars, so maybe there is something easier for engine to do, but still...