It is recommended that you keep your map sizes reasonable in scope. New users should stick to 2km x 2km maximum for their first maps while learning WorldPainter.

Map size growth is exponential, this image shows you how a 4km x 4km map is 16 times larger than a 1km x 1km map. This means up to 16x the amount of work needed to detail it. Most long-term map makers rarely go over 8km x 8km due to the amount of work and time needed to make a detailed map worth playing on. Anything over this requires extensive planning, time, and a good level of skill with WorldPainter. More details here.