I had a issue where my second computer didn't have the same resolution due to old monitors... so when I repeated the mouse it was in a different location on the other screens. Went out and got a new screen for it sorted that out. So ended up running the same res for the windows and in game. That wasn't jittery tho.

If I create a repeater region for healing and set it to ( "all windows" or "all w/o current") then it is jittery, based on the documentation for setting up multiple computers " make sure not to enable Repeater from All Windows" I gather that is expected? so I'm probably going to use a "Action Target Group" to just send the mouse repeater to the two toons I want it to go to that are on my main computer anyway.