My god I was surprised when I found this function, it's frickin' awesome. 
It allows you to sleep down to 100 nanoseconds! 
 
UDF: 
 ; #FUNCTION#;===============================================================================
;
; Name...........: _HighPrecisionSleep()
; Description ...: Sleeps down to 0.1 microseconds
; Syntax.........: _HighPrecisionSleep( $iMicroSeconds, $hDll=False)
; Parameters ....:  $iMicroSeconds		- Amount of microseconds to sleep
;				   $hDll  - Can be supplied so the U