So I found a way for your emulator to fast forward ROM games with the video below.

Video:
https://www.youtube.com/watch?v=nJpNNhVBADs

Question:
I want to apply the same mechanism to executable(.exe) files so I can speed up their run time using the fast forward button, but not for ROMs. I would like to know the method you guys use to speed up(fast forward) the ROMs in the emulator. Thanks for your time.