Random disconnects, turn mouse off and on to get back online, but causes quite a few deaths in-game when it happens :sunglasse
This happened on iCUE version 2.24.50, and I just upgraded to 3.4.95 and so far I have not seen the issue.
Update
Further upgraded to iCUE 3.7.99 and I have daily stops where I need to "reboot" the mouse, turn off, turn on to get it started again, so NOPE, no fix so far.
Update 2
I've changed from using one USB port to another, that seemed to have an effect. Didn't have any disconnects yet on new port. The mouse was in a USB hub before, but it's now directly connected to PC.
Update 3
Yep, changing the port on the PC seems to have done the trick. I haven't gotten a single disconnect on the mouse since I plugged the mouse directly into the PC. So morale is: Check your port type and avoid USB hubs or USB stands on your table. Direct works!