sudomod

Does anyone know if there's any hotkeys to double the speed of a rom for speed runs? From what I've looked up retropie usually has a few ways of doing it but none have worked for me. I don't know if this image is set up differently but any help is appreciated.

Which image are you talking about ?

The latest premade image for mintypi. I left it as a general question about retropie since someone could have done it with their gbz also. I know nothing about software so I may not be making much sense