Hello all

In app it's looks normal:
https://i.imgur.com/JE4VXj8.jpg
Options:
*Span an image across all monitors
*Fit Width and maintain Aspect Ratio
Generally here is looks fine - how it should do.

But when I apply (above) settings its like that:
https://i.imgur.com/1BG3uza.jpg
*red squeres are icons
*black squere is because of different monitor size
But to the point. This wallpaper should fit for both monitos but it looks like 'use the same image on each monitor'.

Anybody had the same problem?

To be honest, it really doesn't matter, I tried many jpg/png files mostly in 4k+ resolution. Every file with wallpaper has the same problem.
What is more when I drag some file (doesn't matter if it's folder, icon, pic) to the 2nd monitor (2nd on the pic) wallpaper glitches (random not always) for few secs (random effect with wallpaper).
After the glitch wallpaper for some time is like it should be (5min, 2h, random really) and after dragging again some other file we repeat what I wrote before.
One of the files is in the attachment for reference.
I use DF since last year and it's the first time something like this is happening.

Yes, like you said after restart the wallpaper looks correct for a while. The problem is after dragging some files (random occurrence).

@Edit
Now always after restert the wallpaper looks correct. Right now it's glitched.

Can I know which parts of Troubleshooting parts you need? I don't like to share whole info about my pc, please understand.

Info should be in the file which I attached.

There are two files:
1. slideshow
2. TranscodedWallpaper

After deleting those files nothing change. Still is the problem with wallpapers.

Yes, I use TeamViewer from time to time.
So you suggest uninstalling it and see how the wallpaper will react, yes?

I will do it but in January. I will post the results after the test.

I tested it for some time.
In the beginning, it was ok (uninstalling TeamViewer) but after few days everything back - I mean glitch.
I tried changing the wallpaper again but it was ok for about 1 hour. After that no matter which wallpaper glitch is the same.

I did it today. I will give feedback in 2-4 days.

Everything was good now, so the last piece of advice should be a solution.
Thank you for help.