Video capture to show YT and Twitch tabs hang:
Activity monitor:

Other details:
- This is on a new profile for only watching videos. It has extensions, but no saved tab group. The profile was created to test if a separate profile can mitigate the issue, but no observable improvements over my main profile.
- There were 5 YT tabs in the windows showing YT, but only the active one was playing. The other 4 had not start plahying.
- Reloading may or may not work, or take long time to finish reload.
Other related observation
- YT video, > 10min, randomly slow down (like slow-motion) for 1 or 2 sec. Never saw this on Chrome.
- Twiter stream error "Pleayer error ..." happen often, even <15min into a new stream. This does on Chrome also, but much much higher frequency with Orion RC.
- Getting in and out of full screen video can feels slow. Expecially when getting out of full screen, sometimes .
PS:
- I just start using Orcion RC to watch Twitch and YT. I cannot tell if these are old issue or new issue.
Video/Streaming should be more stable.
Version 1.1.1 (149.1-rc), WebKit 625.1.8
Tahoe (26)