I've been trialling Multiplicity KVM Pro on a set of three machines: Windows Server 2008R2 Primary, Windows 7 Pro Secondary and Windows 10 Pro Secondary.
I've had various problems with other KM sharing software (InputDirector and Synergy) with this particular Windows 10 Pro secondary machine in the past: mostly relating to the clipboard losing "sync" randomly and needing services restarted in order to get copy and paste working again. Also, I've also had some issues with mouse smoothness on this particular secondary with Synergy - although restarting its services (which can be done with a single click on the master machine) seems to fix it (and the clipboard).
Meanwhile, the Windows 7 secondary works just fine. All machines are connected via a single switch, over gigabit ethernet.
The windows 10 pro machine (the one giving me grief) has issues with the mouse "bogging down" and "lagging" at times. It seems to coincide with various "mouse over" highlights (e.g. moving over dropdown menus, or over mail items in outlook - or even over the border of a window or drag handle of some kind - where the cursor will change to a resize arrow and back again). Seemingly anything that causes a bit of activity through the windows API stomps all over smooth mouse control.
I've tried bumping all of the Multiplicity Processes up to Realtime (I notice that the service was "realtime" out of the box) and it helps a little, but it still bogs down. It's perfectly smooth moving over empty areas of the screen.
Has anyone else had this problem with Windows 10? I should add that it's a Lenovo Thinkpad Yoga 460, so it's got a bit of Lenovo's software on it too (Access Connections, Lenovo Vantage etc etc).