Delay in writing Feature Report

[HarmenSchouten]

Hello,

I am trying to develop an easy application to change the light in an keyboard. I've managed to reach my goal with BusHound, a simulator, and finally I managed to wrote an easy program that does the same.
However, I noticed that the keyboard doesn't respond as fast as it should. Whenever I try to send some data to the device, the light does not change immediately, but I have to send the data multiple times. Sometimes it only requires 2 clicks, sometimes it goes past 10 clicks. Is this an issue with the keyboard, or is it possible that my code (which is available if you want to see it, PM me for details) that causes the delay?
If it is the keyboard, is it possible that the delay is due to that the light data isn't burned into the chip of the keyboard?

Looking forward to an answer,

Cheers, Harmen