[modeless]

Client-side rendering absolutely does make Twitter, in particular, slow. They used to do server side rendering for the initial load not that long ago, and it was so much faster than it is now. Night-and-day difference. I guess they just stopped caring. Someone probably got a promotion for launching the new thing.

[kitsunesoba]

Any time I have to use the Twitter site instead of Twitterrific on both desktop on mobile, the difference is huge. The site is a never-ending barrage of loading spinners.