Blackwidow Elite failing to record macro on-the-fly

Hi all. I'm experiencing some problems when trying to record macros on-the-fly.
- Firstly, I've realized that after typing the desired sequence and press fn+F9, I cannot immediately press the desired key to trigger the macro, because if I do that, the macro will fail to be recorded. Instead, after pressing the fn+F9 for second time, I have to wait 2 or 3 seconds until the red light start to blink and then press the desired key and this way the macro will be recorded successfully. Is this normal?
- Taking into account what I said before (trying to record the macros slowly), I've tried to record macros when playing. However I found out that I can't record macros in about 40% or 50% of the games I've tried (I make the procedure slowly but after that the key assigned to the macro does nothing, and when I go back to windows and open synaps, there is a new macro with the key I assigned, but with an empty action list). Is this normal? Does some games have an anti-cheating protection or something like that to prevent macro recording? May be something related to mi keyboard? May be something I'm doing wrong?