https://bugs.documentfoundation.org/show_bug.cgi?id=153985

Stéphane Guillou (stragu) <[email protected]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |stephane.guillou@libreoffic
                   |                            |e.org
             Blocks|                            |146014
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1

--- Comment #8 from Stéphane Guillou (stragu) 
<[email protected]> ---
I can actually confirm.

Tested on Ubuntu 20.04 with GNOME 3.36.8 + Wayland with:

Version: 7.5.2.2 (X86_64) / LibreOffice Community
Build ID: 53bb9681a964705cf672590721dbc85eb4d0c3a2

I made sure to zoom out a bit so columns A to K were visible.

- With gtk3 VCL, no slowdown (although keeps scrolling for a bit after
releasing the key)
- With kf5 (cairo+xcb) VCL (window is GType:MetaWindowXwayland, so goes through
Xwayland), same slowdown as in video, the interface sometimes unresponsive for
a few seconds after stopping the scroll. The scroll takes the same time to get
to the top, but it's the view that does not refresh frequently, hence the large
jumps.
- With kf5 (cairo+wayland) VCL (window GType:MetaWindowWayland, so Wayland
native), no slowdown.

If you use Wayland, you can see if using native Wayland works better by
launching LibreOffice with extra variables from the command line, for example:

SAL_USE_VCLPLUGIN=kf5 QT_QPA_PLATFORM=wayland libreoffice7.5


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=146014
[Bug 146014] [META] Poor Scrolling Performance
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