I trust it will then be ok to delete all the ddisoftware sub-folders located C:\ProgramData\ddisoftware, yes?
I wouldn't do that!
That's like deciding that in your neighborhood you would like the sun to rise in the north.
Let Qimage work properly at max efficiency by allowing it to run normally. It is always searching for thumbs and Cache files...
If for some reason, your preferred location (C:\Users\Public\ddisoftware\Qimage folders ) is a network or external location, that's fine for a backup, but the operating location should stay as prescribed.
Fred