Adaptive cruise control, lane warning/assist are imo best used on motorways and major dual lane A roads only. Even with the distance setting to max, it will react later than you'd want to, to extreme acceleration or deceleration. After all this is just a last resort reaction by the car, not the default. The default for this car is that we drive it, not sit there inactive as this is NOT a self driving technology. So, we shouldn't use it as such. Adaptive cruise control makes only sense in a situation where traffic flows naturally, everybody driving with similar speed and only slight and slow variances upon that. The only other alternative situation where it should be relied upon is the opposite to free flowing traffic and that is extremely slow start and stop traffic, e.g. when speed varies only between 0 and a couple of miles per hour.
As an advanced motorcycle rider, I can pick out the drivers that rely on adaptive cruise control inappropriately, they always brake too late (where instead they could come off accelerator earlier) and accelerate way too late too, creating big gaps and waves of unnecessary braking that makes the traffic flow stutter and hence cause more congestion. These systems are purely reactive whilst as competent drivers we would be looking way ahead and predict what is going to happen proactively. Please drive your car instead of relying on inadequate software that is NOT self driving!