It is possible to launch Lightact with arguments. The argument that is most commonly used is the one that causes LightAct to open a project and start playing it immediately after launching.
The way to do that is to use -pfile keyword followed by the full path to the .la file you would like to open. Example is given below
"C:\Program Files\Lightact\Lightact3\Lightact.exe" -pfile "C:\Users\Documents\projectFile.la"
If you run LightAct this way, the launching sequence will be much shorter. For example, the Welcome screen won’t pop up and LightAct won’t check for updates.