# Search Performance
## Accurate Totals For Pagination
Show users an accurate total number of results for their searches.
{% hint style="info" %}
For very large systems or systems near resource capacity we recommend disabling accurate totals for pagination.
{% endhint %}
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## Facets
When enabled, if a user unselects a source from their filters the number of matches in that source will not be requested or shown.
{% hint style="info" %}
This improves the performance of searches on large indexes that are used less frequently.
{% endhint %}
1. Check "Only fetch counts in facets for selected sources" to enable this.
2. Check Preload Advanced Search filter counts to have the filter counts preload. **This can be resource intensive.**
* If not checked, the advanced filter counts update when a user selects advanced search.
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## Lazy Loading Results
Configure how many and when results will load, you can also choose when to prompt users to changed their search or filters instead.
1. **Results per page load:** Enter how many results will load at the beginning and each time a user scrolls.
2. **Maximum lazy load pages:** Enter the maximum number of times new results will load automatically as a use scrolls.
* A button to load more results will appear after this point so users can continue to explore if they need to.
3. **Page loads before help prompt:** Enter the maximum number of times new results load before the help prompt appears.
Lazy loading prompt on how to change or improve a search.
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## Group Emails
1. Check this to Group Emails from a conversation together in a thread.
* Enabling this will impact your search performance. We recommend this is disabled when not needed.
