[Libreoffice-bugs] [Bug 121985] Editing any slide element (text, shapes, images, etc.) causes noticeable lags

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=121985

--- Comment #4 from Stefan Zurucker <s.zb at posteo.at> ---
(In reply to Buovjaga from comment #3)

> Would be great, if you could pinpoint the start of the slowness. After you
> reach the slowness and save the file, do you still experience the slowness
> after reopening the file?
Basically yes, closing/reopening doesn't make any difference. Pinpointing this
really has me scratching my head. Sometimes I feel Impress is slow/unresponsive
from the moment I open it; then again it might be alright for a few clicks.

> Although you did reset your profile, it would be interesting, if you tried
> running the experiment entirely in Safe mode, Help - Restart in safe mode
> and then Continue in safe mode.
I tried this now - only for a short amount of time, mind you - but I didn't
notice any improvement. Will try to test longer in the next days.

> You might also experiment with 6.2 or 6.3 as an appimage:
I downloaded the latest appimage, here's the version data:
Version: 6.3.0.0.alpha0+
Build ID: 43836a58ffe943e2fc65be638f9a7d343102cb07
CPU threads: 4; OS: Linux 4.15; UI render: default; VCL: kde5; 
TinderBox: Linux-rpm_deb-x86_64 at 86-TDF, Branch:master, Time:
2018-12-29_04:29:11
Locale: en-GB (en_GB.UTF-8); UI-Language: en-US
Calc: threaded

Now, with version 6.3.0.0.alpha0+ I noticed some changes in behaviour:

*IMPROVED* 
Moving images and text boxes is much smoother while also showing a preview of
the image/text box. Quite nice!

*UNCHANGED*
Selecting an element still isn't instant, but delayed by about half a second.
Clicking into a text box (or pressing F2) in order to write appears to be
smoother, but fonts are still re-rendered which causes an ever so tiny amount
of lag.

*WORSENED*
Switching selections (e.g. having a text box actively selected and now clicking
on an image) causes a delay of 3-5 seconds before the selection changes. I can
also drag and drop elements this way but there's still the same amount of lag.

While I'm waiting for the selection or position of an element to change,
Impress freezes, spikes up to two of my CPU cores to 100% and partly freezes my
desktop. (I can't click anything with the mouse but, strangely enough, can
switch windows with Alt+Tab)

However, afterwards the element selection appears or the element has changed to
the desired position. 
-------
So version 6.3 seems to fix part of the problem but not the root cause? I'm
really sorry if I'm not of any help here... In any case, thank you for taking a
look at this bug report! Please let me know if I can be of further assistance!

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/libreoffice-bugs/attachments/20190125/28358db7/attachment.html>