I recently discovered an alternative, that does the same but works even faster...
and in settings you can choose the compression you wanna use (with CompactGUI you always needed to reselect the compression method on every run).
It's called Compactor , and can be found here: https://github.com/Freaky/Compactor
Here's a screenshot of the program in action:
For periodic analysis and compacting assetto content folder, this one works much faster for some reason. I guess the gain in diskspace will be the same approx . with both CompactGUI and this one...
This should not mess up your files in any way, but just to be on the safe side it's always recommended to have a backup at hand...
