[tdstein]

I'm currently streaming a 4K HDR video on YouTube without issue.

Model Name: MacBook Pro. Model Identifier: MacBookPro18,1. Chip: Apple M1 Pro. Total Number of Cores: 10 (8 performance and 2 efficiency). Memory: 16 GB.

[SamuelAdams]

What browser?

[tdstein]

Tested on both Safari and Chrome. Tried entering and exiting out of full-screen multiple times, and with 4K and 8K video.