Saw the thread on the horrible pathfinding and I have been experiencing this since 100k pop and after that you have to completely redo the whole transportation system in all of my cites. Any road that isn't a maxed out avenue is worthless. Throwing more bus stations actually makes it worse, all of my buses stick together in a heard and skip stops, trash trucks pickup from the same location in a giant group and only cover half the city. Shortest path only algorithm is only a small portion of the issue. *protip get rid of the small buses completely and switch to municipal buses, helps having fewer on the road*
Since an agent is created on the fly and given a set of requirements he finds the closest place that satisfies those requirements and plots the shortest path and goes there. It isn't a case of a sim changing jobs everyday. Instead a new sim is created every morning at every house and he always has a new job, he then usually uses the shortest path to get there. Once he arrives he disappears and at closing time a new group of agents/sims is spawned and they all try and go to homes with certain characteristics, many choosing the same home and then a herd all goes the same way and traffic takes literally in game hours to go away.
In theory this is great that its unique every time, but when traffic locks up trash, buses, exports, and imports all get stuck in traffic. I've bankrupted a city 3 times since the agent carrying my exports never left the city. My city constantly has a trash problem since the pathing on trash trucks is broken; much like buses, recycle trucks, rail cars, etc.
Anyone who has any idea how a water or electrical system works knows its not like an agent based system anyways. It would try and just fill the empty space, I saw a few houses stayed unpowered for an in game day after a brown out while little agents of powered bounced around area's that already had power since they all chose the same places to power up and stayed in a group moving between the stranglers and not splitting up.
I've never had a server connection issue on NA3, but they need to setup some flags for objects so that agents know if another agent is already on the way there. And tell buses, railcars, and trash trucks to avoid each other and not stick together. Traffic is busted; they obviously used the same pathing for everything that touches a road, and that doesn't work, and it's not even good path finding. To top it off they didn't address the issue of them all choosing the same place to go?
While I am upset the maps are also small I think in the future larger ones will come out in new regions, pay dlc, and better hardware to help push it. But it does present a challenge to keep a city afloat once its big, which is nice in some ways.
Also I think there is a small memory leak, after playing 16 hours total over a few session I noticed memory usage of the client growing slowly and then it never all being cleared after a session.