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Here's an awesome performance audit of reddit mobile by Paul Irish. It shows how completely unoptimized the code was back in 2015. Sadly it doesn't seem to have improved much since then.

https://github.com/reddit/reddit-mobile/issues/247

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The entire codebase for reddit-mobile was rewritten.

https://github.com/reddit/reddit-mobile/compare/e3f1119e3358...

Did the rewrite coincide with the re-skinning of the UI? Because any gains in performance are imperceptible, as the UI now hides all content until the browser has completely finished fetching. So even if it is 'faster' the UX is actually 'slower'.

I

The site was in beta at the time so yes no performance work had been done. The rewrite last year improved things and we are working on more performance improvements.

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