EDIT: I think I may be in the wrong forum, but I can't figure out how to delete this. Sorry if I am

---------------------------
I've recently started playing Sanitarium. Game I've owned for a whlie, but even though I like the game I've been having trouble with it lagging graphically.

I found a solution in the form of a command line argument '-e'. I have tested that running the exe with this option works, but setting -e as a custom command line argument in GOG seems to have no effect. Is there any way I can launch this game in GOG w/o making my own shortcut?