I hate SCC. I always switch over to standard CC. AEB still works, but doesn't trigger on cars turning right ahead, or other non hazardous situations like the one you mention - super annoying and hurts mpg. If you are a proactive driver, standard CC is far more efficient (in terms of mpg) than SCC. You are dependent on the bad driving behavior of the vehicle ahead with SCC. With CC, you can look at the road ahead and make small adjustments to speed to smooth out constant accelerating and deceleration, improving mpg.
2018 Kia LX HEV Metal Stream with Advanced Tech