How to get high framerate in slow speed

[NinetyRalph]

I know PPSSPP is able to run games at alternative speeds
It comes very handy and I wanted to know how can I make it so while running games at 50%, to do so without making the framerate go down 50% as well

Thank you

[baerg]

I think the speed is tied to the FPS. So the more FPS you get the faster the game will be.