I just did this, complete registry clearing of iCue after uninstall and I am getting the same result. The more I think about it, I had a M65 mouse prior to this, It had DPI up and Down switches, along with the sniper function. Could the new mouse perhaps be riding off the old mouses configuration through something internally in my system? What I find to be the most telling is the "option" button on my Ironclaw is acting as the "sniper" function from my M65. Also Prior to getting my Ironclaw I never had any Corsair software installed, So my M65 was never utilizing iCue.
Thank you for your help BTW.