pcmanfm-qt slow opening folders with many files

[tlhpray]

On hdd whenever I try to open folder with many files (opening photo folders or /bin /lib takes forever) I must wait for files several seconds. There isn't much change with thumbnails turned on or off so I think it's unrelated. Dolphin had the same problem but now it is the fastest file manager in this field (longest I have to wait on dolphin is 1 sec). I think natural sorting was the culprit then https://freininghaus.wordpress.com/2012/11/27/on-the-way-to-dolphin-2-2/ but asking dolphin devs will probably be fastest way in finding a solution. I am using latest git version on Arch Linux.

[PCMan]

It delays mime-type sniffing so initial load can be faster.
We did not do that. The gtk+ version of pcmanfm has partial support of it, but it's not yet ported to Qt.
This requires much work due to some limitations and bugs of Qt ListView widget.

[tsujan]

Related to #462.

[tsujan]

Please see #462 (comment)