Bazzite - black screen when streaming on steam via steam-link.

All loving Bazzite, although one issue. I use my desktop PC to stream games to my other devices - when using Steam Link or Moonlight/Sunshine, I can get Steam up, and go throuhg the menus and game selection. However once I select a game, the screen goes blank - the game is running as I can hear it - seems like an issue on the video. Any help greatly appreciated as I've looked around. fastftech below