I love this game really. It bring me to the memory of earlier episodes of "Settlers ". Firstly I play with a private copies and finally I buy from steam. During the earlier stage of the game , with low pop and few buildings. Everything is fine . However, once I stepped into the population around 70s to 100s. The game become laggy. It take 2 days for a blacksmith to bring a stack of coal from the stockpile which is 4 buildings far from the metalwork. All the citizen walking around 1 grid each second. I own a not bad machine with i5-4750 , 8G ram and Nvidia 750 TI display card. Anyone facing this problem?