Is there something about the way lemmy works that is causing Sync to chew up so much data? I never saw this kind of usage on Reddit.
My guess: Reddit was serving not high res pictures (thumbnails) while scrolling and only gave them when opening.
Instances would need to create a thumbnail and the actual video. This would require a smal-ish CDN and processing power + storage to save the multiple versions to, right?
Idk about NSFW but arent they just hidden? To my knowledge at least Sync only shows "NSFW" and a blank single-colored post for an NSFW post.