Karel Klozar

hello all, I am using defraggler and I noticed, that defragmentation is very slow - there are big breaks between degragments of every file. I checked disk usage when defraggler is runing (disk D:) - see attached image (win 10 pro). You can clearly see when it is defragmenting file (first is bigger, then there is series of small files) and whet it is taking holliday. What shall I do to use full disk performance ? Stop VSS is checked. Defraggler is the only program running. Thank you.