This patch adds the option to play the game with fully baked static lighting.
To enable this feature: In the launcher, click on "video-settings", then click on "lighting" and choose "static".
To get the highest frame rate possible on a low end PC, use the "lowest" video preset and choose static lighting. With this setup, a PC with a dual core APU and 4gb ram (below the minimum specs for the game) was running the game at an average of 30 fps.
In multiplayer games, the server also has to be set to static lighting.
Note: This variable is not saved and will need to be selected upon starting the game.