Windows 10 Known Issues and Unsupported Features
Nvidia ShadowPlay – Current spacedesk version has a known issue with Nvidia ShadowPlay. While Nvidia ShadowPlay (screen record) is active, spacedesk will give an error code 1-2-0 on the viewer side. Just disable it in order to use spacedesk.
Night Light – Windows Night Light settings is currently not supported on spacedesk displays.