Scrolling unresponsive in LyX 2.4.0

[Scott Kostyshak]

On Sat, Jun 08, 2024 at 11:21:44AM GMT, Jean-Marc Lasgouttes wrote:
> Le 07/06/2024 à 22:01, Richard Kimberly Heck a écrit :
> > On 6/7/24 15:13, Hung-Tzu Chang via lyx-users wrote:
> > > I recently installed LyX 2.4.0 on macOS 12.7.5(intel) and found that
> > > scrolling plain-text (revtex4-2, with several sections with math,
> > > comments and LyX note plus an appendix but no figures) documents
> > > created by LyX 2.3.7 tends to lag. This can be reproduced by quickly
> > > scrolling the document up and down by 3-5 times. Sometimes the
> > > program would stop responding and recover after a few seconds.
> > > Converting the document to LyX 2.4 format with lyx2lyx does not
> > > help. Also this behaviour occurs with both Qt5 and Qt6 libraries (Qt
> > > 5.15.12 and Qt 6.6.2 from Homebrew). This did not happen to LyX
> > > 2.3.7.
> > 
> > I believe this is a known issue, which will be fixed (we think!) for 2.4.1.
> 
> Unfortunately I am not so sure about that :( It is not normal to have a
> regression in 2.4.0.
> 
> Hung-Tsu, do you have a document that you could share with me for testing?
> 
> Even better, do you know how to use a profiler like Instruments to see where
> the time is spent? I did all the testing on Linux, and there is a
> possibility that caching of glyphs behave differently on macOS.
> 
> Do you have math previews enabled? Does it make a difference if you change
> the setting?

Dear Hung-Tzu Chang,

Are things better with 2.4.1?

Scott
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