Thread:Support/504 gateway time-out

I get this occasionally. Last week I had to set recentchanges' limit=166 to see the page (bug). Any value greater than 166 gave me timeout that day. Today simple translation interface request through https://translatewiki.net/w/i.php?title=Special:Translate&group=core&filter=!translated&action=translate gave me same error. After a couple of refreshes page loaded.