Logitech Lua Sleep Behavior

Insert the following block of code at the beginning of your script, before OnEvent() function

do
   local function busyloop(final_ctr)
      final_ctr = final_ctr - final_ctr%1
      local ctr, prev_ms, ms0, ctr0 = 0
      while ctr ~= final_ctr do
         local ms = GetRunningTime()
         if prev_ms and ms ~= prev_ms then
            if not ms0 then
               ms0, ctr0 = ms, ctr
            elseif final_ctr < 0 and ms - ms0 > 500 then
               return (ctr - ctr0) / (ms - ms0)
            end
         end
         prev_ms = ms
         ctr = ctr + 1
      end
   end
   local coefficient = busyloop(-1)
   function FastSleep(ms)
      return busyloop(ms * coefficient)
   end
end

After that you can use function FastSleep(delay) in your script for small time intervals.

Example:

FastSleep(0.5)  -- wait for 0.5 ms

For big time intervals (for example, 30 ms or more) standard Sleep() is preferred.