blinktag

To clarify the answer above for anyone else who comes upon this (because it confused me at first): LaunchBox for some reason has the "-f" parameter attached automatically (sneakily) to all the platforms supported by RetroArch, and that setting is probably not where you expect it. As JoeViking said, you have to go to Tools>Manage>Emulators, double click Retroarch, then go to the "Associated platforms" tab. There you will see "-f" listed next to every platform, and you can remove it there. I probably spent over an hour trying to figure this out, and I don't think I would have without coming across this post. Seems like it might have been better to let people control this option through the usual, more obvious channels, by default eg, via the in-game RA settings or showing this parameter in the main RA settings inside launchbox.