I do have the same problem and it is pretty disapointing.
For every task i want to do, i have to repeat the left click 3 or 4 times in order to have an action. I can hear the clic everytime but it does nothing 75% of the time, and the randomness of the problem makes me also think that is a software/driver problem.
My driver is at 3.24, everything is up to date.
I did have this problem several times for the past, then for no reason it worked again for months, and now since 3-4 days ago, it is getting worse and worse.
I heard a lot of good things about Corsair, so I decided to purchase the RGB Elite but I'm afraid this experience will be the last i have with Corsair
I won't mind if one of the gadgets doesn't work (the lights, the profiles and all side stuffs)...but the left clic not working...this I cannot accept.