Welcome to the Org, Strategy_gamer!

After all this time, I think it's safe to say that CA/Activision/Sega will not be releasing a patch for the game, it will be up to the (declining) userbase to find workarounds. If you tried the nVidia control panel fix, maybe adjusting some of the settings slightly differently will work with your particular setup. When you say "map lagging", is this on the battle or campaign map? Do you have Vista 32-bit or 64-bit?