Great tip ClaytonM, I have been concerned about the resolution issue but had not delved into it yet. Your reminder led me to this post: Display resolution - #2 by jibanjyoti so I’ll probably play around with the Activities.InvokeWorkflowInteractive a little bit to see if I can account for this potential problem.
Also potentially a good resource on Resolution settings: The ScaleCoordinates Migration Tool
Awesome about Highlight: that will help me greatly with testing! Also good to know about .Height and .Width
Cheers