Cities: Skylines

I've been playing the game and have been seeing performance drops and over all poor performance as a whole. It isn't show stopping though due to the type of game it is. But yes, I was playing yesterday and saw something fly over the city when I was zoomed in, I paused the game and found it was a police helicopter, and that son of a bitch was as detailed as you'd expect to see in a game with helicopters you could fly your self. The amount of texture and geometry detail was insane for something that is going to be a spec 99% of the time.