All the Magic happens in The script folder. The only thing happening inside the menu script is binding the Q Key To the key toggle run script. In the loop script there is a commented out status so you can just ignore it. You want to look inside đź“‚Scripts/m_Playground.script
and đź“‚Scripts/key_toggleRun.script
.
BoxOfCereal/EFPSE_DEMO_Walk_Run_Toggle
An example of how to toggle walk and run speeds in EFPSE 1.10
GLSL