Are you using multiple PCs? It sounds like you're describing the issue where multiple windows are repeating the mouse at each other (thus making it jerky), and this can only happen if there are multiple windows that have the focus (e.g. one on each PC).

So a couple things... first, you want to send the mouse only to the healer's window, instead of all windows. Secondly, the healer's window doesn't necessarily need a repeater region in it. To select only the healer on the other PC, you will want to create an Action Target Group and put the healer in it. Then it will be listed in the drop-down box you use to create a Repeater Region. X out the existing region (you cannot edit it), then check "Block local click" and then select your healer ATG from the drop-down box and click Add. Position it, then Sync, and Save (as Auto)