Here is an update on KVM lag and lockups.
I was able to get is work with default setting, after rebooting the primary & the secondary. Doing more testing I was able to Triger the issue on command.
1. Opening and configuring Multiplicity on the primary computer causes the KVM to lag, lock up, or crash. This happens less frequently when configuring occasionally, but continuous configuration and setting changes, as I was doing seams to trigger the lag, lock up, and crash. Once the issue occurs, I have to reboot both the primary and secondary computers to restore normal functionality.
2. Using the side bar seams to trigger the issue every time Once you close the side bar it goes back to normal.