Google Nest Community

My old chromecast will optimize fullscreen videos no problem when casting from my laptop, but my brand new chromecast with tv 4K won't, the chromecast just mirrors the laptop (and quite quickly the audio becomes garbled and the video becomes choppy)....

Watching some streams I always cast the tab, then fullscreen the video and it optimises (making the original screen black and showing the full quality vid on my TV). This has always worked perfectly.However the streamer must have changed the player t...