PortMouth (Vanilla)
Vanilla city: about 100k pop. It’ll fit completely in 9 tiles; a few mods were used, but you need none to make the city work.
My objective was to create something that a laptop would handle (that’s because I game on a laptop), so no huge numbers!
You will probably need all the DLCs, even though I think the city would load anyway, just with no DLC content.
Balance is good, income is good and some jobs are missing (low level industry strives a bit).
The map I used is my "Portmouth" map, soon to be published here on the workshop, specifically designed for 9 tiles cities.