>>715250216problem is once you drove on the same track for the hundred time you now know every single corner and traps, at that point you're just learning how to get fast by using the game mechanics at your advantage.
custom tracks at least make it more challenging when you start a new game because you get to learn the mechanics + learn the tracks.
at least Assetto corsa is modable so i can just download new tracks and play on them but everything else ? nope, liscenced stuff only except for GT