Solr requests have poor performance when using Group.facet = true

I am trying to use Solr group queries. They work 0k, the average time is about 120 ms. When I turn on group.facet = true, requests become unbearably slow - about 8 seconds !!!

Can someone help me here, I really need to use both of these functions together.

Thank you very much.

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Source: https://habr.com/ru/post/1485555/


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