I use it almost all the time, with a few exceptions. I'm on 11.4.4.
One is heavy traffic. Despite 'Chill' setting,
FSD always tries to change lanes to end up in the leftmost lane, which is suboptimal.
Second is road work. FSD unsurprisingly ignores the red signs and tries to use blocked lane.
Third is 1 particular intersection that makes it go crazy if driving above 25mph (legal speed limit is 35).
Other times it's fine. Raises my adrenaline, which is good for morning commute and afternoon glucose crash