You should not have to spend more money. Set your graphics card to use the application setting on everything that you can set to Application Control and everything else set to disabled. Start AH and go to the video settings when it first starts and start off with antialiasing slider all the way to the left. Under Options/GraphicDetail/Advanced make sure that only Detailed Terrain is checked. Now Object Detail and Ground Detail Range can be set as in the old version and you should get the same results for frame rates as the old version (give or take).