I am having the same issue being discussed here. It started ~2 days ago, since I have updated Windows 10, updated iCUE, updated mouse firmware, preformed a clean install of iCUE, forced the firmware update to the mouse again, and the problem still persists. I have had Corsair products for about 4 months and have had serious software issues with both my k95 RGB Platinum and now the mouse is so sporadic it is unusable. Corsair's hardware is beautiful and can compete with other retailers, unfortunately its software team seems to struggle to keep up. Microsoft updates are not an excuse for bricking expensive gear.