Start AC, set controls to mouse + keyboard, select practice, select custom profile and set TC, ABS, SC off.
Now take a rear happy car with a decent power. Start.
Open pedals app, the one that shows you the bars clutch blue, brake red, gas green and FF gray.
Step on gas anywhere on track even in pits, let it rev in neutral all the way up and hold gas, look at the gas in the pedals app, drop in first gear and you will see the gas is suddenly not applied to max but only to about 60-70% as the hidden TC kicks in. The same happens if you drift the hidden TC will kick in.
Now if you brake heavily with a car that has strong brakes the red bar will jump up and down and brakes don't get applied 100%, sure the wheels may be already locking up quite a bit but there is still a hidden ABS. If you have hard time to notice it, try braking on grass or while spinning or even when standing still it doesn't apply brake to max.
Unfortunately they have so far ignored this with: "as designed". So yeah, it's designed as arcade with assistants :/
I'll try make a video maybe because it's really boring to explain it to people over and over again who simply do not want to believe because they never did much racing with mouse and keyboard.
This is my setting:
This is full gas (key pressed) with wheels spinning, you can see that gas doesn't get applied to full because a hidden assistant is reducing it.
Same thing with brake, key pressed and car is still yet a hidden assistant is reducing applied brake force, this of course happens when braking into corners as well etc.
Ok just from the screenshot I see another bug, the speedometer doesn't show true wheel speed so when wheels are spinning but car is standing the speed is zero instead of the true wheel speed say 60-80km/h when torturing the 1st gear.