@dankcushions cause they delete it. They said it's not their business and not care about, send me back ask here - very friendly $-)
But, anyway it does not have any matter. I use overclocking ps1 cpu in options and play NFS3 at 60 frames at all stages ( when it goes at 30-40 by default).
But couldn't understood how it work - maybe it's turning on some frameskip like?
The event game-start passes two parameters to every script in the folder ~/.emulationstations/srcipts/game-start/: ROM and basename (easiest is to echo them in a test script to determine what they represent exactly.)