The next version of Steam Link for macOS is now available as a beta build.

You can opt into the beta on TestFlight by clicking on the link here:
https://testflight.apple.com/join/Cye7Gfyy

A new video codec, Pyrowave, is available in the custom streaming settings. It is experimental and your experience will vary greatly depending on your network connection.

You can find out more, and leave us feedback here:
https://steamcommunity.com/groups/homestream/discussions/0/564794422009744473

New in build 1.4.1.139:

• Improved color clarity and brightness
  
• Fixed a crash at the start of the stream when Spotlight is enabled
  
• Fixed crashes when using the controller to interact with streaming dialogs
  
• Fixed the network health dialog popping up at the beginning of the stream

New in build 1.4.0.138:

• Added an experimental video codec, Pyrowave, which allows high bandwidth, low latency video streaming. (requires connecting to the latest Steam beta on the desktop)
  
• Added a network health check while streaming
  
• Automatic display resolution does a better job of matching the actual display resolution, up to 1080p