Acres can import large KML files. As demonstrated by importing the United States Census Counties Map. This map contains approximately 3200 complex polygons covering the entire US including Alaska and the Puerto Rico. Even with this large file imported and displayed in Google Map the program remains responsive. The Area Manager easily scrolls through all 3200 counties showing name, Area, color and visibility.
To import KML files into the current Project upload a KML file to the KML folder. Then select the KML file from the list and click the Import button.