https://bugs.documentfoundation.org/show_bug.cgi?id=155375
Bug ID: 155375
Summary: LibreOffice Writer scrolling is extremely laggy/choppy
at a resolution of 3840 × 2160; effect
diminishes/disappears as resolution is lowered. Text
input lags, as well.
Product: LibreOffice
Version: 7.5.3.2 release
Hardware: All
OS: Linux (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Writer
Assignee: [email protected]
Reporter: [email protected]
Description:
When the resolution of the display on GNOME 44 is set to 3840 × 2160,
LibreOffice Writer's scrolling becomes choppy and laggy.
As the resolution is lowered to something like 1440p, the effect diminishes.
The lower the resolution, the less the effect.
I compared it to Firefox, which is able to scrolling very smoothly without
dropped frames/lag on the same hardware. I tested several other applications
(Audacious, GNOME Terminal, GNOME Text Editor, Element, and Telegram, and none
of them have choppy/laggy scrolling at 4k on my hardware).
Turning on or off Java in the preferences makes no difference.
I've only confirmed this in LibreOffice writer, but I suspect the issue affects
all of the entire LibreOffice suites.
I'm guessing LibreOffice struggles with higher resolutions either due to a bug,
inefficiency of some kind, or possible memory leak.
Running radeontop shows a spike in GPU clock and memory usage. CPU jumps when
scrolling at this resolution as well, more so than 1440p or 1080p.
Changing refresh rate to something lower than 100hz does not seem to help the
issue. Even at 60hz, LibreOffice is still noticeably slower/laggier/choppier
than every other application on the same hardware when scrolling.
Note that while typing, key presses take slightly longer to register. Sometimes
entire phrases will take seconds or more to register and print to the screen,
though this is rare. Text input lags considerably as resolution of the desktop
increases. This problem does not persist in other applications as mentioned
above.
Steps to Reproduce:
1. Change resolution of GNOME desktop in Fedora 38 to 3840 × 2160.
2. Restart LibreOffice writer.
3. Scroll any document that is sufficiently long enough (a page or more, for
example).
Actual Results:
Choppy/laggy scrolling performance.
Expected Results:
Smooth scrolling and no dropped frames/lag the same as resolutions lower than
3840 × 2160.
Reproducible: Always
User Profile Reset: Yes
Additional Info:
I was able to reproduce this bug on Linux Mint 21.1 through Cinnamon. The same
issue happened when I was using i3-wm on Linux Mint 21.1.
Using Wayland or X.org doesn't seem to make much of a difference.
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