On some hard drives wiping the MFT free space can take a very long time.
While there is an option to disable "Wipe MFT Free Space" for the Cleaner tab/workflow there seems to be no such option
for the Tools -> Drive Wiper. It would be nice if Driver Wiper would also have an option (e.g. as checkbox) to skip wiping MFT free space for less thourough but faster drive wiping.