Trying to understand what "laggy" means. Low frame rate?
Trying to understand what "laggy" means. Low frame rate?

video do not autoplayThey should fix that. Autoplay should be off by default if there's audio (or at least muted) but on by default in most other cases. I've actually got a Firefox plugin that turns off autoplay for everything but then I'm weird.
Gifs are built for sharing,no. gifs are used for sharing because of a cluster of poor usability decisions by browser vendors and web developers.
Chrome's autoplay policies are simple:
Muted autoplay is always allowed.
Autoplay with sound is allowed if:
The user has interacted with the domain (click, tap, etc.).
On desktop, the user's Media Engagement Index threshold has been crossed, meaning the user has previously played video with sound.
The user has added the site to their home screen on mobile or installed the PWA on desktop.
As far as documenting, don't really have anything to add to what's in the original tilt brush documentationBut we've just had 20 screenful of discussion about various subtleties around export. Is there not even a couple of useful snippets that can be distilled from this discussion that would improve the docs?

Assets/Prefabs/Panels/SketchbookPanel.prefab: m_Text: New Sketchgit grep