Hello CatalogK9,
Thank you for sharing your problem.
It is possible that this issue is caused by power source.
To make sure, please try to disconnect the device from its power source and connect it back again. Reconnect your MacBook and display and check if the issue persists. You can also try alternative connection method to rule out cable-related issues.
If you have already used the End-User Cleaner Tool, I assume you have installed the latest version of the DisplayLink driver.
If your problem still occurs, please collect data by following
this steps.