Found the answer here:
https://www.reddit.com/r/Chromecast/comments/1hcbfpo/comment/m2ap03h/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_buttonNeed
to disable: Enable hardware H264 video encoding on for Cast Strea...
Let me add some light to the issue. Sadly no solutions still. Cannot
cast full screen on internal display for M1 Mac.I have the same problem,
casting a tab is no issue. Casting the full screen on external monitor
is OKBut casting full screen on inter...
