No it's broken everywhere.
Specifically, the speed control is broken. If you're traveling on very low speed busy city street you won't notice that, since even on a 25mph street people often drive 15mph (which is what FSD does now).
But that doesn't mean it does great in cities. It'll drive too slowly, just like it does everywhere. As you can see there are reports of nonsense in that regard in the city as well.
Speed control is broken, and stopping is broken. Just completely and totally broken. (Speed control is more broken than stopping though - sometimes the car can stop.)
There are extravagant claims that it will all be fixed soon. We'll see. Hopefully it just fixes right up - that would be a huge positive.
Good that they're going to try to fix it anyway, and that they recognize it's an issue. These problems are easily worked around for now, but detract from the overall great v12 experience of course. In v11.4.9 you usually did not have to worry about your speed.
My prediction is that these problems will remain, even after they are “fixed” in the next version. This is the way!