I'll just throw in my own input here from what i found while testing about with runspeed in the attemp of making a character faster then a cop on low wanted levels but not as fast as a player, put this small list with the other strange commands i found so far:
Code:
SET_CHAR_MAX_RUNSPEED( character , x.y )
Speed 0.1 : Pretty damn high speed.
Speed 0.07: Reasonable but faster then normal speed.
//Speeds above 0.06 may cause instability and crash the game, especially high values.//
Speed 0.06: Normal running speed.
Speed 0.055: Almost as fast as normal speed. Perhaps handy for stronger peds.
Speed 0.053: A small bit faster then 0.05, handy for targets who are supposed to be chased.
Speed 0.05: Half-ish of normal speed. Cops use this on the lowest Wanted Levels.
Quite fun how Speeds 1.0 and above just make the character go faster then Superman in flight and just dash across the screen with steps of several miles, essentially teleporting forward rapidly, but this event almost always ends up in a crash.
Its also hilarious to see a bot catch up to a high-speed car with these speeds. :P
I suppose a list of reasonable speeds wouldnt hurt. Or atleast the speeds of low wanted level cops, and regular speed.