I have been a fan of build and manage games ever since Populous came out on the Amiga, after that came Sim City (they were both relased 1989) and then kinda got tired of them or should I say, i grew up, Sim City got more bells and whistles, Monster invasion and crap never appealed to me.
Cities XL Plat is a hardcore city building game, it's realistic to the point nothing in a city can ever be stagnant or it fades away, the better the city the faster the problems, trying to fix to many issues, gets you new ones.
As many of these games its about keeping a balance and anticipating where once you grow your new problems will arise.
I read some negative reviews cant say I agree with any of them, as a city building game its really fun and probably has 50-100 hours of gameplay before you feels it has nothing more to give you, Sim City has more bells and whistles, but this game has hardcore realism, it reminds me of Banished.
Stability i am not sure about, no problems at all so far, intel/nvidia, nothing special.