I know people that get as low as 0, and even lower -1/-2. Someone I know had stuff running in the background and it went to -5.
There isn't much you can do about it, make sure there are no unnecessary applications running, disabling your antivirus may help, just be sure to turn it back on. Unless they make improvements to the gamecode the only option you have is to buy a better cpu.
They never fixed this issue in Supreme Commander, so I'm not sure how much they will try and fix it here.
So your options are:
- Buy a new cpu
- Make sure there are no uneecessary applications running
- Try disabling antivirus
- Try disabling sound (this will give you a very small increase, but if it give you more then you may have driver issues)
- Try the Core Maximizer application that people used for supcom
- In the game options turn Spawn rate to slow
- Pick maps with less unit spawns/portals (like the snake one)
- Make sure your CPU is cool, depending what you have they can slow down after 60degrees
Some maps run better, this may be directly related to the number of unit spawns. It doesn't matter how good your graphics card is, it will not help. Turning your graphics to low will also make very little difference for sim speed.