Bug 134324 - Scrolling is lagging when rendering images or tables
Summary: Scrolling is lagging when rendering images or tables
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Writer (show other bugs)
(earliest affected) release
Hardware: All All
: medium normal
Assignee: Not Assigned
Keywords: bibisectRequest, perf, regression
Depends on:
Blocks: Smooth-Scroll
  Show dependency treegraph
Reported: 2020-06-26 15:54 UTC by sitnarf
Modified: 2021-10-12 11:27 UTC (History)
4 users (show)

See Also:
Crash report or crash signature:
Regression By:

Screencast 1 (25.46 MB, video/x-matroska)
2020-06-26 15:55 UTC, sitnarf
File (619.10 KB, application/vnd.oasis.opendocument.text)
2020-06-29 12:46 UTC, sitnarf
File with the issue (618.62 KB, application/vnd.oasis.opendocument.text)
2020-06-29 12:49 UTC, sitnarf
Document with a table (703.47 KB, application/wps-office.docx)
2020-06-30 08:36 UTC, sitnarf
Scrolling with a table (24.45 MB, video/x-matroska)
2020-06-30 08:36 UTC, sitnarf

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Description sitnarf 2020-06-26 15:54:18 UTC
The issue occurs both with both hardware acceleration enabled and disabled in the LO settings. Tested the latest nightly build, the issue persists.

Steps to Reproduce:
1.Create a file
2.Insert images

Actual Results:

Expected Results:
Smooth scrolling

Reproducible: Always

User Profile Reset: Yes

OpenGL enabled: Yes

Additional Info:
HP ZBook 15 G6
NVidia Quadro T2000

Build ID: 1:6.4.3-0ubuntu0.20.04.1
CPU threads: 12; OS: Linux 5.4; UI render: default; VCL: gtk3; 
Locale: en-US (en_US.UTF-8); UI-Language: en-US
Calc: threaded
Comment 1 sitnarf 2020-06-26 15:55:17 UTC
Created attachment 162430 [details]
Screencast 1
Comment 2 Telesto 2020-06-26 20:05:13 UTC Comment hidden (obsolete)
Comment 3 sitnarf 2020-06-29 12:45:53 UTC Comment hidden (obsolete)
Comment 4 sitnarf 2020-06-29 12:46:13 UTC Comment hidden (obsolete)
Comment 5 sitnarf 2020-06-29 12:49:55 UTC
Created attachment 162506 [details]
File with the issue
Comment 6 Telesto 2020-06-29 13:39:38 UTC
I confirm a slowdown scrolling around the image on Windows with GDI
Version: (x64)
Build ID: 20be5cd0bdc57d812bf34a2debfe48caa51de881
CPU threads: 4; OS: Windows 6.3 Build 9600; UI render: default; VCL: win; 
Locale: nl-NL (nl_NL); UI-Language: en-US
Calc: CL

and in 7.1 slightly faster)

FWIW, do you also have an table example (probably something different)
Comment 7 Telesto 2020-06-29 13:42:13 UTC
Also in

but not in
Build ID: 3215f89-f603614-ab984f2-7348103-1225a5
Comment 8 sitnarf 2020-06-30 08:36:00 UTC
Created attachment 162542 [details]
Document with a table
Comment 9 sitnarf 2020-06-30 08:36:37 UTC
Created attachment 162543 [details]
Scrolling with a table
Comment 10 sitnarf 2020-06-30 08:37:17 UTC Comment hidden (obsolete)
Comment 11 Telesto 2020-06-30 08:45:58 UTC
But of 2 bugs in 1.. The initial report I confirm on Win (GDI) Table scrolling is fine for me (Win). Would mind to give it a try 
Comment 12 Sarah 2021-10-12 11:27:35 UTC
I also get this problem, even when a document contains no images.  As I find LibreOffice much more accessible than Word, especially as it has drop-down menus, I really do not want to return to MS Word, but the poor rendering is becoming increasingly difficult.  

I don't understand why it should be doing this as I have a very good 4k graphics card and display, and have tried hardware acceleration, but the problem persisted.