@xoubie
From the Artcast "How to Stream" FAQ page (https://artcast.tv/stream/)...
I'm streaming on Roku and Artcast keeps shutting off after a short period. How can I fix this?
To prevent Roku’s screensaver from disrupting your art stream, please ensure you have disabled it in the Roku Settings area under Theme or Screensavers > Screensaver wait time > Disable screensaver.
-----
If disabling the Screensaver does not resolve issue, you should contact the channel developer and let them know of the issue. (https://artcast.tv/contact-us/)
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102