https://bugs.kde.org/show_bug.cgi?id=393205

--- Comment #15 from Maik Qualmann <metzping...@gmail.com> ---
The problem is detected, it is also related to Bug 391115. The icon view takes
more and more time, the more elements are displayed. The QListView and
QSortFilterProxyModel gets slower as you add or remove items. Moving (renaming)
in the database initiates this process. At the moment I do not see that there
is a mistake in the implementation or there is a possibility for us to
accelerate QListView. I have a patch here that dramatically speeds up the
renaming process. I rename the ImageInfo, also in the ImageInfo cache, in the
database and in the thumbnail database. Therefore, the item in the QListView
does not need to be removed and added with a new name. The patch has to be
tested a bit...

Maik

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