# Very Slow Find/Search (Ctrl+F) in Large XLSX Files – Still Present in ONLYOFFICE Desktop Editors 10

**URL:** https://community.onlyoffice.com/t/very-slow-find-search-ctrl-f-in-large-xlsx-files-still-present-in-onlyoffice-desktop-editors-10/21035
**Category:** Desktop editors
**Tags:** new
**Created:** [14 October 2026 06:47 UTC](https://community.onlyoffice.com/t/very-slow-find-search-ctrl-f-in-large-xlsx-files-still-present-in-onlyoffice-desktop-editors-10/21035 "2026-10-14T06:47:13Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Andres\_Castano](https://community.onlyoffice.com/user_avatar/community.onlyoffice.com/andres_castano/32/11501_2.png) [@Andres\_Castano](https://community.onlyoffice.com/u/Andres_Castano)
#### Post date: [14 October 2026 06:47 UTC](https://community.onlyoffice.com/t/very-slow-find-search-ctrl-f-in-large-xlsx-files-still-present-in-onlyoffice-desktop-editors-10/21035/1 "2026-10-14T06:47:13Z")

</div>

**Operating system:** Debian 13 64-bit  
**Desktop environment:** GNOME / Wayland  
**Application:** ONLYOFFICE Desktop Editors 10

**Problem**

The Find/Search function (Ctrl+F) becomes extremely slow when working with large XLSX spreadsheets.

In my tests, searching for a word can take **more than 20 seconds** before the results are displayed.

I originally reported this issue to ONLYOFFICE Support under **ticket #124397**.

Support recommended testing the problem again with the newer version of ONLYOFFICE Desktop Editors.

I have now tested **ONLYOFFICE Desktop Editors 10** , and unfortunately the problem **still persists**.

**Steps to reproduce**

1. Open a large XLSX spreadsheet.
2. Press Ctrl+F.
3. Search for a word that occurs many times in the workbook.
4. Observe the time required for the search results to appear.

**Actual result**

The search may take **more than 20 seconds**.

**Expected result**

Search results should normally appear within a few seconds, even in relatively large XLSX workbooks.

**Reproducible test file**

I have prepared an XLSX test workbook specifically for reproducing this issue. It contains large amounts of spreadsheet data and repeated search terms.

Suggested search terms:

`ONLYOFFICE_SEARCH_TEST`

`PERFORMANCE_SEARCH`

The same problem is reproducible in **ONLYOFFICE Desktop Editors 10**.

I would appreciate it if the development team could reproduce the issue and, if confirmed, provide an **internal bug/tracking number**.

It would also be useful to know whether search performance optimization is planned for an upcoming Desktop Editors 10.x release.

 ![image](https://community.onlyoffice.com/uploads/default/original/2X/7/7de311992fdf0ace68d2ab00ffca940cee6b6bc0.png)