I used to display one image spread across both my monitors but I recently replaced one of my monitors and now the resolutions of the 2 monitors are too different to work well together with one image like that. What I thought I would do instead at least for now, was to get images in pairs that I think go together (ie, Mario and Luigi, one on each monitor) and have the images cycle in pairs. To help accomplish this, I named the images something along the lines of BG1L.jpg and BG1R.jpg, BG2L.jpg and BG2R.jpg, etc etc. I put all the Left monitor images in one folder and the Right monitor images in another.

This worked well for a week or perhaps a couple of weeks because my pc is mostly always on with very few reboots but somewhere along the line one of the monitors swapped images when the other monitor didn't, and the images were no longer paired up etc. It's actually turned out to be comically difficult to get the paired up images to cycle as pairs again.

Is there anything built into DF that I'm overlooking that would help me with this, like a way to actually assign images to be displayed together, or a way to reset both monitors to displaying the first files in their respective folders so that the display order gets back on track, or even a way to cycle only one monitor so I could manually do it ?

I changed the setting and restarted DF, but if changing that setting had any effect at all, I'm not seeing what it was.

If I close out DF, my DF task bar disappears and visually at least, thats more or less it. Nothing changes with my wall papers. When I restart DF, likewise, nothing changes with my wall papers. The images cycle every 30 minutes to the next one in the list, but the out of sync order stays out of sync. Restarting DF, and/or rebooting my PC seems to have no effect.

Yes, that file was there, but deleting it and restarting DF still did not appear to have any effect.

Ok, that worked. I never noticed that button before.