Hi Alan,
I was connecting remotely to a client's computer using Visual Studio and the right click wasn't bringing up the menus, or more specifically context menus were not visible during the remote connection.
You should have enabled the option "Capture alpha blending windows". Here is how
https://www.remoteutilities.com/support/kb/some-windows-or-menus-are-not-visible/I had considered setting up my own Remote Utilities relay host to see if that would help, but have just been too busy. It could be a connectivity issue between Utah and where ever the Remote Utilities server is hosted.
Apart from using your self-hosted server please also try the
latest beta 6.9.0.1. This from release notes:
The remote screen transfer speed of dynamically changing content (e.g. videos) over slow connections has been increased.This is not only about slow connections, of course. The very screen capture algorithm in the beta was improved as compared with the current stable version (6.8.0.1).
Hope that helps.