Well shucks that's simple you just gotta go where you want the slowdown and do something like for i = 1 to 100 sleep 1 next of course with modern cpus yo

Well shucks that's simple you just gotta go where you want the slowdown and do something like for i = 1 to 100 sleep 1 next of course with modern cpus you gotta adjust your i to be something more reasonable, like for i = 1 to 1000000000 works every time