It seems that this noisy pattern is happening outside spacedesk screen image processing.
Even the Window’s print screen cannot capture it too..
We are now convinced that there’s a third party app on your machine that is messing up with the connected spacedesk screen.
Can you tell us some of your software (e.g. 3D apps) currently running while connecting a spacedesk viewer?
We also noticed you have a third party app for your Start menu button, can you tell us what software it is?