Hello David,
Thank you for your message.
Please try updating your Remote Utilities to the latest version
7.1.2.0 which is available for download on
this page or via the
Self-update feature. When updating please make sure that your Viewer and Host are updated to the same version as the version mismatch might lead to performance issues or some features not working.
In addition, please try enabling the
Use legacy capture mode feature in the
Host Settings -> Other tab and see if this helps to resolve the issue. After enabling the feature please make sure to restart Host in order for the changes to be applied.
Hope that helps.