XnView Software

Yep, that's totally what it was. Oddly enough setting Sort By to Extension doesn't seem to have any performance hit and does what I need. I'll use that instead of sorting by Type. Thanks!

Found it.

Line 9 of the ini (under the Browser tag) is called ArrangeBy=

My old ini (from the slow XN install) was this:
ArrangeBy=4

The fresh install ini is this:
ArrangeBy=7

If I manually set my old ini to ArrangeBy=7 the problem goes away.

Pierre, can you tell me what the ArrangeBy= setting ...

Getting close to an answer now. I uninstalled and then re-installed XnView Classic Minimal/Small (I picked Minimal just to cut down on the number of additional variables). No change, still very slow.

I then uninstalled using Revo Uninstaller to look at the files left behind by the XnView ...

could you try with a simple folder (only 4/5 image files)?

I'm seeing no issue with 4 or 5 images in a folder. There is no noticeable pausing until about 40-50 images. The problem seems to scale with the number of images. Every 50 to 100 images seems to increase the wait by maybe another second ...

xnview wrote: Sun Feb 18, 2024 8:07 am do you have a lot of files in the folder of image shown?

In most cases the folders have nothing but images in them (typically JPG or PNG). But some may have a few non-image files.

I've been using XNview classic for quite a while to browse folders with lots of images (sometimes five thousand or more) and it used to be incredibly fast. I'd double click an image in explorer, View would open, and I'd mouse wheel up or down to step forward or back through the images.

But ...