Mouseclick in program does not work

Hey there community,

I'm still new to this autoit scripting so bare with me. I've tried to make a script to work with the program called: BlueStacks.
In this script I want it to click on some locations with a sleep timer in between, now the annoying part is that it sometimes clicks and sometimes it just doesn't or delayed whilest there is no delay typed out in the script in the clicking.

So my question to you all is why does the click function work or does not from time to time. Because this basically breaks my script and makes it useless.

Hope to hear from you soon!

~panyamap