Special:Translate search is very slow
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Fragment of a discussion from Support/LiquidThreads
The filtering on Special:Translate filters the list of loaded messages. The other search pages can use the search backend to only return matching results. Making Special:Translate filtering faster would be a considerable amount of work, so I just suggest to use Special:SearchTranslations.
Could you make Special:SearchTranslations to show the pairs of english and selected language side by side in search result like this?