I was using CheatEngine to force game to generate larger maps. 600x600 was playable with mod that made forest real really dense with a lot of animals, game took 2,5-2,9 GB of ram and crash if you save scum too much

Without that mod and on some not animal rich biome, one could probably go with some larger map. Ignoring that, play was really fun, i have had to build roads for hunters and trade caravans to even have chance of them to arrive and not die of starvation and predators