Loss Of Cursor and Keyboard

Running three PC's (Desktops) All have Windows 11 Home and Version 25H2. 

Using KVM mode.

I get random complete frieze with keyboard and mouse disappears. There is no warning. The caps lock key will show it can still be changed. 

Ctrl Alt Del will bring up the menu but nothing can be pointed to or actioned.

This lasts for a few seconds to over 24 hours. Suddenly as quick as it stopped working it is back on again. The only thing that stops it happening is to carry out the action required on one of the other/both pc's and then to unload the software.

The only other way to clear it is to push on/off button and re-start pc.

This has been happening since I took out licence some months ago. I would ditch the software but there is nothing else that works in the way Multiplicity works.

Today I had forgotten to unload software and was working on the main Pc and lost access to everything for over an hour.

Any thoughts on what is causing this.

Simon