Rename the original steam_api.dll to something like ValveAPI.dll . Copy the LumaEmu steam_api.dll into the folder in its place.
Once you have a working lumaemu.ini , you can unlock better performance:
This file acts as the "brain" for the emulator. It tells the game how to behave by providing critical data that usually comes from the Steam servers. : Specifies the unique ID of the game you are running. Player Name
