I have a Sony Vaio laptop with a 2.8 GHz Intel Pentium 4 processor, 448 MB RAM. The graphics chip is a 64-bit ATI Radeon IGP 340M with 64MB memory. The game is running OK with low graphics settings but if there are many cities and/or units on the map then sometimes it gets really tedious. Can I speed up the game by changing some settings? What should I improve first in terms of hardware to make it run faster (e.g. should I buy more RAM first)?