First of all, Corsair - get your **** together. It's 2019, and there literally hasn't been a peep about a solution this issue. And if there was one, then you guys sure as hell made it hard to find. This is my favorite mouse, and I've been using different iterations of it for the past 6 years. It's ridiculous to see the lack of support on this issue, when literally every owner of M65 models are having this issue when having to use iCue with another device. I wouldn't even bother with the software altogether if I didn't have an RGB Corsair keyboard. May have to take a second to think next time I'm out shopping for another keyboard and mouse.
Anyway, for those of us who have been suffering throughout the years. I have figured out a temporary/permanent solution to our double click misery:
Open iCue, and select the Settings tab. Click on the mouse in the options under Device Settings. Then click on the Update button, and do a Force update.
This seems to fix the issue, but again, only temporarily. The problem seems to come back after a reboot or restarting iCue, but on infrequent occasions. So basically every time you start seeing the double click issue again, just go to iCue, and force an update. Dumb, I know, but this is what we have to do if we want to continue to play with this mouse.
Corsair, if you're listening, please for the love of god, just add a toggle option to iCue to allow a user to disable iCue for the mouse specifically in settings. That would at least be a more permanent fix until you guys figure out the issue, if it ever gets figured out... Anyway, hope this post helps somebody, peace.
And by the way, please do not listen to some of these people who are saying they fixed their issues by taking their mouse apart because they were having problems with the switch or anything like that. They have a separate issue, and it's honestly annoying as hell when I see it posted as one of the solutions on every thread in the world about solutions to this problem. Before you take your mouse apart, do yourself a favor, or humor me idc - try uninstalling iCue, reboot the PC, see if the problem persists. If it does, then maybe consider it might be your polling settings in either Windows or iCue. If those aren't the problem, then yes, you might be in a more unique situation where you will have to take apart the mouse. But if removing iCue did fix problem, then welcome to our hell. Hopefully, what I mentioned above will help ease the pain.
