https://bugs.documentfoundation.org/show_bug.cgi?id=170652
Bug ID: 170652
Summary: Performance: Extreme slowness when saving a large
Impress presentation (50MB) after minor text edits
Product: LibreOffice
Version: 25.8.4.2 release
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: LibreOffice
Assignee: [email protected]
Reporter: [email protected]
Description:
I am experiencing significant performance issues when saving an OpenDocument
Presentation (.odp) file. Even after making a very minor change (e.g., editing
a single word), the saving process takes an unusually long time and causes the
application to hang momentarily.
Steps to Reproduce:
1. Open the attached 50MB presentation file.
2. Navigate to any slide and edit a small piece of text.
3. Press Ctrl + S or click the Save icon.
4. Observe the time taken to complete the save operation.
Actual Results:
LibreOffice Impress becomes unresponsive for almost few minutes during the save
process.
Expected Results:
Minor text changes should be saved almost instantaneously, as the bulk of the
file (images/media) remains unchanged.
Reproducible: Always
User Profile Reset: No
Additional Info:
Version: 25.8.4.2 (X86_64) / LibreOffice Community
Build ID: 580(Build:2)
CPU threads: 8; OS: Linux 6.17; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US
Ubuntu package version: 4:25.8.4-0ubuntu0.25.10.1
Calc: threaded
# System Details Report
---
## Report details
- **Date generated:** 2026-02-07 16:37:33
## Hardware Information:
- **Hardware Model:** MONSTER HUMA H4 V2.2
- **Memory:** 8.0 GiB
- **Processor:** Intel® Core™ i7-8565U × 8
- **Graphics:** Intel® UHD Graphics 620 (WHL
GT2)
- **Disk Capacity:** (null)
## Software Information:
- **Firmware Version:** N.1.02
- **OS Name:** Ubuntu 25.10
- **OS Build:** (null)
- **OS Type:** 64-bit
- **GNOME Version:** 49
- **Windowing System:** Wayland
- **Kernel Version:** Linux 6.17.0-12-generic
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