I noticed that my topic received some attention. For those who still want to use FreeCommander on a little not the fastest computer: combine Freecommander with the Irfanview thumbs browser.
So I don't use the thumbnails view in Freecommander anymore.
- In Freecommander Click on a folder you want to explore
- Open with the right mouse button the contextmenu
- Select Browse With Irfanview.
Now you can watch the content of the folder, open the images in Irfanview, and change the folder name in Irfanview filebrowser.
Back in FreeCommander Push on the refresh button for updating the foldertree.