I noticed that I do no longer get suggestions for many messages while translating TechNews. Some suggestions, especially for short messages still work.
It is unknown to me whether there has been gradual slowdown and we passed the 10s timeout limit now, or whether there is a sudden slowdown making everything slower.
ElasticSearch backend for translation memory is not yet ready. Since I do not know the clause I do not know if there is anything we can do before migrating to ElasticSearch.