Hi,
I have the same problem using iCUE software with LS100 light strips.
This problem seems to be related to the Corsair.Service.DisplayAdapter service, loaded in background when iCUE software starts.
If I try to terminate this service, mouse pointer stops to jump to the top-right corner of the screen, but the iCUE software restart the service after a couple of seconds, so there is no way to solve the problem other than closing iCUE software.
In my case I use a dual monitor configuration, so when the mouse pointer is on the left monitor it jumps to the top right corner of the monitor, while in the left monitor (which is also the primary monitor) the mouse pointer behaves regularly, although sometimes he jumps on the upper left corner.
I have encountered the problem with the latest versions of the software.